What Kind Of Flies In The Septic Tank? (Best solution)

Drain flies are sometimes referred to as “moth flies” or “sewage flies.” Drain flies are often found resting on kitchen or bathroom walls, near sewage drains, trash cans or septic tanks. Drain flies feed on sewage and pipe buildup.

  • Drain flies breed in drains, septic tanks, sewers and soil that has been contaminated with sewage. Wherever they find water, they’ll breed. Any areas of your home where it’s wet and shouldn’t be are potential breeding grounds, so this is another reason to take care of all leaks and moisture problems asap.

How do you get rid of septic flies?

Make up a solution of equal parts white vinegar, water and sugar and place 5-10 drops of liquid dish soap into the mixture. Place it next to the sink and flies will be drawn to the liquid and drown.

What does a drain fly look like?

Body: Light gray or tan body and lighter-colored wings. The body and the wings are covered with long hairs, giving the fly a fuzzy appearance. Characteristics: When at rest, the drain fly folds its wings over the body in a characteristic roof-like manner. Size: Drain flies measure about 1.5 to 5 mm long.

Should I kill drain flies?

While drain flies are not harmful to you, they are annoying. To get rid of them, you’ll need to clean and sanitize the drain, getting rid of their eggs and the flies themselves.

How do I get rid of sewer flies in my septic tank?

Pour in 1/2 cup of salt and 1/2 cup of baking soda plus a cup of white vinegar. Allow it to work its magic overnight then flush the drain with hot or boiling water the next morning. This will sanitize the drain and kill the flies and their eggs.

What are the tiny worms in my septic tank?

Cryptosporidium parvum is often found in septic tanks. According to a serological research conducted by the FDA, approximately 80 percent of the North American population has had cryptosporidiosis one point or the other in their lives. The main culprit is believed to have been contaminated septic tank water.

How do you find the source of drain flies?

Locate the Source Drain flies can come from organic buildups in any area where there is standing water. Check your bathroom drains, kitchen sink, shower, sump pump, sewage system, and even floorboards where there might be a pipe leak. Look for multiple flies hanging out on the walls near these possible sources.

Is there a spray for drain flies?

Pyrid is an easy-to-use pyrethroid aerosol spray. All you have to do is point and spray any straggler Drain Flies that remain in the area. Use this product as a contact spray for quick kills of any Drain Fly you manage to find. Hold the spray can 18 to 24 inches away from the target area.

Where are these little flies coming from?

Infestations have to start somewhere. Fruit flies move into kitchens, bathrooms, and basements if they sense a food source. Overripe fruit on the counter or any fermenting matter in drains, mops, and trash bins appeals to them. Unsuspecting homeowners may also bring these pests inside on garden crops.

What are tiny black flying bugs?

These small black bugs flying inside your home that are not fruit flies, or mosquitoes, are fungus gnats. Fungus gnats look like tiny mosquitoes. Outdoors, these small flying bugs live and breed on damp soil beds, compost piles, decaying organic waste like foliage, rotting wood pieces, and mulch beds.

What is the best drain fly Killer?

Best Drain Fly Killers

  • American Bio-Systems DrainGel.
  • Lawson Drummond DF5000.
  • Valtec Bio-Action Total Solution Gel.
  • Pest Peeve Bye Bye Drain Flies.
  • Green Gobbler Drain Fly Goodbye.
  • Forid.
  • Drano.
  • Rid-X.

Can gnats come from septic tank?

Many fly species belonging to the Psychodidae family are particularly foul pests because of their common association with drain-scum, sewage, septic tanks, compost piles, and mold. These flies are commonly known as “drain flies, “moth flies,” and “sewer gnats,” and they are among the most common pests of homes.

Can drain flies come from the toilet?

Conclusion. There might be drain flies coming from your toilet, but they are more likely to come from your sink, tub, or shower drain. If they come from the toilet, the most likely culprit is the closet flange, which requires removing the toilet to access. Carefully remove the toilet and clean the flange thoroughly.

Recognize The Fly Pests Associated With Drains, Septic Systems

There are about 100,000 fly species in the Diptera order of insects that have been documented across the world, many of which are pests in houses all over the world, including the United States. “Flies” brings up ideas of typical home flies, as well as maybe similar-looking biting flies, such as horse or stable flies, when it comes to insect pests. Mosquitoes, gnats, midges, and crane flies, among other insects, are classified as members of the Diptera order. A fly species belonging to the Diptera insect order is defined as one that has just one set of wings, or two wings in total, as opposed to four-winged insects such as bees, wasps, butterflies, moths, dragonflies, and many other species of insects.

The filth fly’s terrible reproductive habits allow them to mechanically transport hundreds of disease-causing bacteria into houses, making them a medically significant nuisance in many areas of the world.

Known variously as “drain flies,” “moth flies,” and “sewer gnats,” these bugs are among the most prevalent pests of the house, with drain flies being the most common.

Adult females deposit their eggs on food buildup in drains or pipes, or on water supplies that have been polluted with fecal matter, which results in an infestation of drain fly eggs.

A female drain fly’s optimal egg-laying site is the accumulation of scum that collects between the tiles of a bathroom or kitchen’s floor tiles.

As with moths, they also rest with their wings over their heads while not moving, and they are unable to go more than a few feet at a time due to their notably weak flying skills.

The plumbing and septic tank should be checked for damage if the source of the drain fly pests within an infested property is determined to be none of the usual breeding places mentioned above. Have you ever had a problem with drain flies in your house or apartment?

Drain Flies in Septic Tanks

Having discovered that you have drain flies in your septic tank should not have come as a huge surprise. Indeed, one of the more frequent names for Psychodidae is sewer flies, which is a term that many people are familiar with (or gnats). Septic tanks, along with drainpipes, are two of their favorite urban dwelling sites they’ve ever encountered. It is their manner of life that is the cause of drain flies in your septic tank, if you are wondering why you have them in your tank. Sewer gnats spend their whole lives in highly moist and humid environments, where they feed on a wide variety of organic materials and waste buildups of all kinds.

Additionally, they reproduce in places where the larvae have the highest chance of surviving, such as the thin jellylike coatings that may be seen in septic tank field lines or in sewage treatment plants.

Every now and then, they emerge from their breeding locations for a short period of time (usually at night), but the majority of the time, they spend their days within the pipes and tanks, where they have access to water and food.

It works great!

Are Drain Flies Good for Septic Tanks?

Drain flies, on the other hand, are not considered dangerous to humans because they do not bite frequently. Another advantage of having a healthy and moderate number of flies is that they feed on the organic materials that people produce, which helps to keep the tank cleaner. But how do you keep the right number of flies under control without allowing them to reproduce in such large numbers that you end up with a serious infestation? If this problem is not addressed immediately, it has the potential to become a very expensive problem to resolve.

To say nothing of the fact that all of the bacteria they are transporting from the septic tank can end up on your indoor surfaces.

Drain flies are generally not considered a problem by most people when they are not bothering them, owing to their small size and lack of tendency to fly much (they are known to be quite the unlucky fliers, actually).

How Do I Get Rid of Drain Flies in My Septic Tank?

If you decide to get rid of sewer gnats while they are still in your septic tank, there are a few things you may try first before calling an exterminator to come out and treat the problem. Simple home remedies are most likely effective if you catch the problem at an early stage, when there aren’t too many flies around to complicate matters. Gnat larvae can be killed using readily accessible materials such as diluted bleach or a mixture of baking soda and vinegar. These items can work wonders.

  • The use of strong pesticides to eliminate both flies and their breeding places will be quite effective, however these chemicals are not recommended for use in septic tanks.
  • As a result, the use of heavy chemicals may cause your sewage system to become utterly useless.
  • In addition to these solutions, there are also commercially accessible options now, such as new probiotic gels, which will essentially turn all of the gnat feeding supplies into minerals and water.
  • Alternatively, it might be harmful to the environment.
  • For those looking for a third option among environmentally friendly items, here is one that has attracted our attention on the internet: Septic tank treatment using BioWonder.
  • Despite the fact that we have not yet had the opportunity to try it out, we have carefully picked some of the most viewed customer reviews about it and are sharing the most important aspects with you.
  • When compared to comparable sewage systems in similar homes, the septic pumper in some of the families that used the product appears to be far cleaner now than it was previously.
  • They claim that not only has the device eliminated flies, but it has also eliminated offensive smells.
  • According to the information accessible on the internet, this appears to be a potentially successful product in the fight against flies in septic tanks and other similar situations.
  • If you decide to attempt this or any other commercial treatment to deal with your gnat problem, please make sure to properly follow the manufacturer’s directions while applying it to the affected area.
  • If you have an infestation of any type, this is always the most surefire method of dealing with the problem.

Maintaining pipes and tanks on a regular basis is vital in order to ensure that flies do not reappearance. A easy solution is to run some drain gel down the pipes on a regular basis to prevent clogging. Alternatively, you may grow some fly-repelling plants in your house.

Frequenty Asked Questions

Drain flies are known to reside in septic tanks. Drain flies (also known as sewer flies or gnats) may live and breed in septic tanks, which is true. They can also be found in the drain pipes, sewers, and soils around your property. What is the best way to get rid of sewage flies in my septic tank? Natural cures or commercial septic tank solutions may be used to get rid of sewer flies in a septic tank, and they are both effective. Some of them are 100 percent biodegradable, which means they will not harm the ecology of your septic tank or the environment.

  1. Is it possible for gnats to originate from a septic tank?
  2. These little mammals dwell and breed in the area, and they devour organic materials as part of their diet.
  3. What is causing the gnats to come out of my drain?
  4. It is typical to see gnats and drain flies around the shower, toilet, and even the kitchen sink since these insects like areas where there is plenty of water.
  5. It works great!

How to Get Rid of Drain Flies

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Drain flies are not uncommon, although their appearance may be perplexing to some people. What is the source of their existence? What are they doing in my house? Is it possible for drain flies to harm my family? Drain flies, like any domestic pests, may be a nuisance, especially when present in high numbers. Besides becoming familiar with the techniques required to get rid of drain flies, you should also become acquainted with what drain flies are, what causes them, and how to avoid a future infestation.

What Are Drain Flies?

Drain flies are probably something you are already familiar with, even if you are not aware of it. Drain flies, also known as “Psychodidae,” are little insects that measure between 1/8 and 1/10 of an inch in length. They are wide, hairy, and generally a dark tint, as is the case with wolves. There are six legs, two sets of wings, and antennae on this fly. Drain flies are sometimes referred to as “moth flies” or “sewage flies” in some circles. Drain flies are frequently found sitting on the walls of kitchens and bathrooms, as well as near sewer drains, garbage cans, and septic tanks, among other places.

They are born with specific breathing passages that allow them to survive even when they are submerged in garbage.

Are Drain Flies Harmful?

Drain flies are generally not hazardous to humans, despite their unnerving presence, because they do not bite.

The presence of high numbers of drain flies, on the other hand, might be a problem because of their proclivity to clog up sections of plumbing systems.

What Causes Drain Flies?

Drain flies are drawn to quiet, stagnant water because it is sluggish. In the event that you have spotted these pests in and around your property, it might indicate the presence of drain obstruction or water leaks. In the same manner that typical household flies enter your home, drain flies do as well: they squeeze through windows and drains, fly through open doors, or emerge from the basement.

Drain Fly Breeding Sources

In the vicinity of the source of waste to which they are drawn, such as domestic drains and sewers, drain flies reproduce and lay their eggs. These eggs will hatch in around 48 hours. They are white when they hatch into larvae and are commonly seen inside the gelatinous component of the build-up after the eggs have hatched into larvae. They will remain in this membrane until they reach maturity. While the sight of squirming larvae might be disconcerting, they are frequently beneficial since they eat away at the accumulation of waste while they are around.

Drain flies, on the other hand, reproduce rapidly, which means that once the adults have died, there will almost likely be a fresh group of larvae ready to take their place.

See also:  How Much For A 1350 Gallon Septic Tank? (Best solution)

Steps for Getting Rid of Drain Flies

The first step in getting rid of drain flies is determining where they are coming from. Check for broken sewage lines outside, as well as the wet region beneath air conditioning units and any other areas where there is a pool of still water. Concentrate your search inside on the places where you notice the greatest number of adult drain flies. This might be in close proximity to sink and bathroom drains, toilets, showers, or floor drains, among other things. If you need assistance determining whether or not flies are present in a specific drain, you have a few possibilities.

The theory is that, if a big number of drain flies make their home in the drain, they will become stuck inside the jelly, so verifying their existence in the drain.

One possible method of removing this build-up is to use a bristles brush of plumbing grade and manually scrape the membrane away from the pipe.

This should only take a few of weeks at the most if there is no organic debris for them to deposit their eggs in during that time.

Natural Remedies for Drain Fly Control

It is possible to get rid of adult drain flies that have remained after they have been killed using insecticides. Set up a trap, consisting of a bowl filled with one part water, one part sugar, and one part white vinegar, as an example. Dish soap (five to eight drops) should be added. Adult drain flies should be attracted to the bowl if you leave it out during the course of the night. Another option is to make a do-it-yourself spray by mixing equal parts warm water and dish soap together.

As soon as you notice adult flies, spray them. Using an old-fashioned fly swatter to get rid of adult drain flies is perhaps the most natural method of doing away with them. Despite the fact that this procedure is typically untidy to clean up after, it does not entail the use of any chemicals.

How Do I Keep Drain Flies From Returning?

If you have completed the difficult task of identifying and eradicating the cause of your drain fly problem, you need take the appropriate precautions to prevent them from recurring. The most effective method of accomplishing this is to maintain your drains and pipes as clean as you can. Allowing muck to accumulate over time is not recommended. Aside from that, you should make every effort to minimize any sources of stagnant water, including repairing minor leaks around the house as needed.

Should I Call a Plumber or an Exterminator?

A plumber should be called if a large number of drain flies keep returning to your home despite your best efforts, no matter what you do. Because they feed on sewage and plumbing buildup, a plumber may need to take a closer look at the interior sections of your plumbing in order to locate and eliminate the source of the infestation. Fortunately, most plumbers are familiar with this procedure. However, while exterminators may be able to assist you in getting rid of the flies, they are not equipped to deal with the more sensitive portions of the plumbing that they may come into touch with throughout the process.

Drain Fly Solutions in Syracuse, New York

Mr. Rooter Plumbing of Syracuse, New York is a top-rated plumbing business that can help you get rid of those pesky drain flies in your house. Contact us now for more information. If you have a drain fly infestation, our professional plumbers can assist you in locating the cause of the infestation by performing a plumbing diagnosis and inspection or by finding leaks in your home’s plumbing system. Why should you use Mr. Rooter Plumbing? Among the many reasons to select Mr. Rooter Plumbing are the following:

  • Pricing up front: At Mr. Rooter Plumbing, we understand how crucial it is to have access to economical plumbing services. Unlike other companies, we provide upfront, flat-rate pricing that you agree to before we begin working on your property. In order for you to have complete control over your plumbing, our specialists will take the time to explain each and every step of the procedure. Customer service that is second to none: Our specialists promise to leave your house as clean as we found it, and they are committed to providing pleasant, courteous, and knowledgeable service on a consistent basis. Locally owned and operated businesses include: The fact that Mr. Rooter Plumbing has sites all throughout the United States does not detract from the fact that those stores are locally owned and run. Licensees and insurers include: Each of our plumbers is licensed and insured, which speaks volumes about the level of expertise and skill that our plumbers possess. Parts of the workmanship are guaranteed: Mr. Rooter Plumbing provides high-quality service each and every time, guaranteeing that the task is completed correctly the first time. Professionals who are courteous and in uniform: Our dependable workers are easily identified by their uniforms. Do you have a question? Our plumbing technicians are available to answer questions and do the task as fast and effectively as feasible. Availability of convenient appointment times: Availability of convenient appointment times puts the power back in your hands. For your convenience, Mr. Rooter Plumbing provides appointment times on weekends and after hours.

Contact Mr. Rooter Plumbing today to receive a quote for your plumbing project. Previous PostNext Post Previous Post

Drain Flies

Chris Sansone, Rick Minzenmayer, and Bastiaan M. Drees**Texas A&M University System Extension entomologist and Extension agent—entomology (pecans) are all members of the Texas A&M University System’s entomology team. Adult Drain FlySmall flies in the home are a typical source of irritation. Flies are classified as Diptera in the scientific community, which means they have only one set of wings on their wings in most cases. Halteres are threadlike, knobbed appendages on the underside of the wings of these insects, which serve as their second pair of wings.

  1. Drain flies, fruit flies, fungus gnats, mosquitoes, and midges are just a few of the little bugs that can infest your house.
  2. If you have an infestation, the first step is to identify which of these pests is causing the problem.
  3. Most of the time, they may be found among fruit and vegetable peelings, decaying fruits, and other similarly flavored things.
  4. Fungus gnats have black wings and are not fuzzy in appearance, as is common with other gnats.
  5. Fungus gnat larvae often grow in the potting medium of houseplants.

Drain flies are often referred to as moth flies due to their fuzzy look, which is common among them. They are dark gray to black in color and may be found around sinks and baths, among other places. This fly is a member of the Psychodidae family of flies.

Biology and Habits

Drain flies are little (1/6 to 1/5 inch long), black, and thickly coated with hairs when they are in their adult stage. When they are at rest, they fold their huge wings over their bodies, giving them the appearance of a moth or a butterfly. They are poor flyers, barely managing to go a few feet at a time. They are at their most active in the late evening hours. Females lay eggs regardless of whether they are mated or not. Egg masses contain between 30 to 100 eggs, which hatch in less than 48 hours into little (3/8 inch) legless larvae that are pale in the center and darker at the ends, and which are pale in the centre and darker at the ends.

The larvae feed on fungus, bacteria, algae, and other microorganisms found in the liquid or slime layers that form around trash in drains, sewage treatment beds, and other bodies of water, as well as in standing water.

Larvae are capable of surviving high temperatures and low oxygen environments.

Adults can only survive for 3 to 4 days without food, but they can survive for 1 to 3 weeks if they have access to nectar or other liquid carbohydrate meals.


Drain fly larvae are really advantageous because they break down organic waste into water-soluble chemicals, which makes them more readily available for disposal. Adult flies, on the other hand, are a nuisance. Even though they are not able to bite, they can get so numerous indoors that they cluster around windows and around light fixtures, as well as around shower and bathtub drains, as well as around sinks and floor drains. When it comes to drain fly problems, the goal is to identify and eradicate the cause of the problem—that is, the locations where excess moisture and organic material have accumulated.

  • Flooding can occur in several places: damaged or faulty septic lines
  • Rainwater-prone areas
  • Areas where air conditioning condensate lines drain
  • Areas where algae or mold grows on the soil or foundation
  • And beneath air conditioning units on the roofs of commercial buildings or units adjacent to a building.

A neighbor’s yard, neighboring shallow pools, or sewage treatment facilities, particularly those that are upwind from the property, may also be a source of infestation for the homeowner. If this is the case, notify the individuals in charge of the contaminated regions. Infestations can occur in the following areas of the home:

  • Sink and bathtub/shower drains
  • Floor drains in commercial buildings and basements
  • Condensate pipes for icemakers
  • And loose ceramic floor tiles where water may gather are all examples of places where water can accumulate.

If there are a large number of adult flies inside a drain, it is likely that the drain is a breeding place. Check drains (or gaps in the floor) for breeding places by placing a length of tape over the hole without completely covering the drain opening. When the aperture is completely covered, there will be no air movement and the flies will not be able to emerge. Check the tape on a regular basis. If you notice flies clinging to the tape, you have discovered the source of the infestation. Cleaning by hand is an option.

  1. This removes the larval feeding supply from the equation.
  2. Follow up with a thorough cleaning by flushing the lines with hot water to eliminate any residue that has remained.
  3. Drain Cleaners with ChemicalsThere are bacterial drain treatments available that biodegrade organic waste.
  4. Drain and toilet bowl cleaners are available in a variety of forms.
  5. Chemical drain cleaners can also be employed, albeit their effectiveness may be less than that of other cleaning methods.
  6. The combination of these two chemicals in the drain line may result in the production of chlorine gas, which is exceedingly dangerous to anyone who breathes it in.
  7. Insecticides, on the other hand, are beneficial when immediate control is required until breeding places can be cleared.
  8. When applied to insect larvae, the active component, hydroprene, has a growth-regulating effect on them.
  9. In-home use of pyrethrin-based aerosol sprays (or other “flying insect” aerosols) may provide temporary relief from adult drain flies, but they are not a long-term solution to the problem.

Always read the label and adhere to the instructions and safety measures provided. Bastiaan M. Drees, Extension Entomologist for the Texas A & M University System, took the photos.

How to Get Rid of Drain Flies

Stagnant water or germs can collect in home drains, especially if the sink or drain is left unattended for an extended period of time. In the event that you’ve observed a sudden influx of extremely little, moth-like insects hanging out around your sinks, showers, or baths, it’s possible that you have drain flies. It is possible to have an infestation of these extremely common pests in as little as 48 hours, making it quite simple to find oneself with an infestation in a short period of time. In contrast to other pest infestations, learning how to get rid of drain flies may be a quick and straightforward process.

Here in this tutorial, we’ll address all of your concerns regarding how to get rid of drain flies and who you should contact if you need the assistance of a professional pest control firm for assistance.

What Are Drain Flies?

Drain flies are widely referred to by a variety of nicknames, including moth flies and sink flies. In terms of size, they are similar to gnats and fruit flies—between 2mm and 5mm in length—but may be differentiated by their tiny, moth-like wings and spherical, fuzzy bodies. Drain flies are further distinguished by their coloration as compared to other tiny house flies, with their hues often ranging from pale gray to black. Despite the fact that they resemble moths, these little organisms are unable to fly very far.

Despite the fact that drain flies have a lifetime ranging from eight to 24 days, they may lay and hatch up to 300 eggs in as little as 48 hours, making it critical to get ahead of the problem before it has a chance to spread throughout your pipes.

Where Do Drain Flies Come From?

They are drawn to stagnant water that has collected even trace levels of germs and sewage, which is why they are frequently observed congregating near areas such as

  • Kitchen and outdoor sinks
  • Shower and bathtub drains
  • Basement sinks (particularly those that have been ignored for a long period of time)
  • And toilets. Sewers
  • Septic tanks
  • Sewage treatment plants Soil that has been contaminated by sewage

One thing that all of these locations have in common is low, stagnant water levels. During periods of stagnant water and sewage accumulation, drain flies can deposit their eggs in the film that accumulates on the interior of pipes and drains. As a result, drain flies may be drawn to the following items:

  • Storm drains with standing water
  • Wet mops and buckets
  • Compost pilings Garbage cans, birdbaths, and barns that are surrounded by water

What Do Drain Flies Eat?

In order to survive, drain flies must feed largely on organic material found in standing water, which may include sewerage or other polluted water. This occurs most frequently when a film forms on the inside of pipes due to condensation, usually in a humid environment with standing water. As a result, drain flies find your drains to be an excellent environment in which to live and breed. A gathering of rubbish, animal waste, or compost may also be a source of food and sewage for these creatures.

Are Drain Flies Harmful?

In a nutshell, drain flies do not pose a threat to human health. Drain flies are not disease-carrying insects, despite the fact that they consume and live in sewage and germs. However, when in large numbers, they can transport bacteria with them. Overall, they have not been shown to be harmful to your health, despite the fact that they are a major annoyance in your house.

As previously said, drain flies have the ability to multiply fast, resulting in the proliferation of nests throughout your pipes that may be extremely difficult to remove if left unchecked.

How Can You Tell If You Have Drain Flies?

If you’ve begun to see these small moth-like flies in and around your house, you may not be aware that you have a developing infestation in your plumbing. There are a few surefire techniques to determine whether or not there are any more drain flies living and breeding in your pipes.

See also:  How To Fill In A Collapsed Septic Tank?

Duct Tape Test

Using duct tape, cover the top of your drain and leave it sealed for at least 24 hours. Drain flies will ultimately attempt to rise to the surface, but will become entangled in the tape as they exit the system. Not only does this get rid of some of the flies in your drain, but it can also give you an estimate of how large the infestation has grown over the course of time. Repeat the process multiple nights in a row to gain a thorough understanding of the problem.

Check for Larvae

Drain flies are known to deposit their eggs in the organic material that accumulates just at the opening of your drain’s main orifice. Remove the drain cover and check for thin, tube-like drain-fly larvae by scraping some of the slime off the sides and underneath the drain cover. Even if you don’t see any eggs here, but are confident that you have an infestation, this might be a clue that the eggs are being placed further inside your plumbing system.

Ways to Get Rid of Drain Flies

It is possible to use a natural or chemical method to get rid of drain fly infestations; however, this will depend on the severity of the infestation. In many cases, basic household things such as items found in your kitchen or beneath the sink may be used to effectively eliminate drain flies rapidly.

Natural Ways to Get Rid of Drain Flies

When it comes to removing drain fly larvae and removing any incentive for drain flies to return, just washing out your drains can be effective in certain circumstances. Use these strategies to handle your infestation, both as a preventative measure and as a management strategy.

Boiling Water

The quickest and most effective way to resolve your drain fly problem is to gently pour boiling water down your drain 1-2 times a day for approximately a week. This will ensure that the flies do not return the next morning if the water did not catch all of the organic material that had accumulated within.

Baking Soda + Salt + Vinegar

Combine this tried-and-true pantry concoction to make a natural cleaning solution that you can pour down your drain overnight. The baking soda expands as a result of the vinegar’s presence, reaching a greater area than boiling water. After allowing the solution to rest until the next morning, flush the pipe with hot water to clean it.

Soap + Water + Sugar + Vinegar

Combine the ingredients in a bowl and stir well. Add a few drops of dish soap to the mixture. To attract drain flies to your sweet solution, leave the bowl out for several days close by the drain. The flies will be trapped in the water due to the thickness of the soap that has been added.

Apple Cider Vinegar + Plastic Wrap

Plastic wrap may be used to make another typical DIY fly trap by wrapping a bowl, jar, or mug with it.

Fill the bottom of the container with apple cider vinegar to a depth of one inch. Using small holes at the top of the plastic, you may let fly larvae in while preventing them from escaping.

Drain + Duct Tape

Use our drain fly detection approach, which we discussed above, to eliminate some of your drain fly problems as well. Sealing up your drain with duct tape overnight for several nights in a row can help to catch any flies that attempt to reach the surface of the water.

How to Get Rid of Drain Flies with Chemicals

Because drain flies frequently congregate in or around your pipes, basic drain cleaners and chemicals for clearing drains are effective at eliminating drain flies. When using chemical cleaners, make sure to follow the manufacturer’s directions and avoid mixing them with other chemical or natural cleaning solutions.

Traditional Drain Cleaner

It is possible to clean out the remaining residue in your drain after flushing it with warm water and using a metal pipe brush. Drano and Bio-Clean are two products that can be used for this purpose. If necessary, double-check whether it is safe to use these products more than once and whether they can be used in drains other than those in the bathroom.

Chemical Sprays and Repellents

In many cases, popular pest control products, which are generally intended to fight fruit flies or gnats, can be used to kill drain flies if the pests are stated on the product label. Because many of them include caustic chemicals, you should determine if you should keep them out of the kitchen and whether you need be especially cautious about causing harm to your drains.

  1. It is safe to flush Green Gobbler down drains, septic systems, and even garbage disposals because it is an effective fly killer. This gel-based drain cleaner is great for problematic pipes that require an expanded cleaner to catch any further nests or flies
  2. It is non-toxic and environmentally friendly. American BioSystems: Typically advised for business drains, this is an extreme alternative for removing germs out of drains, particularly when dealing with a drain fly infestation
  3. However, it is not recommended for residential drains.

How to Prevent Drain Flies

Drain flies are attracted to stagnant pools of water that contain sewage and other organic matter, according to the CDC. Drain fly infestations may be prevented by maintaining clean pipes that are cleaned out on a regular basis, either with water or, in more severe situations, with cleaning solutions, according to the manufacturer. Using a stopper to shut a drain that is routinely left unattended for days or weeks will prevent drain flies from establishing a nest there in the meanwhile, according to the EPA.

Never keep soiled mops in buckets of water, and make sure your septic system is in good working order.

It is critical to take preventative measures in order to identify and treat a potential problem.

Professional Drain Fly Control

Drain flies may be eliminated quickly and effectively by experienced specialists using tried and true methods. We’ve looked into the best pest control companies in the country. Based on our years of expertise, pricing, and customer feedback, we’ve selected the following products for drain fly management.


All states, with the exception of Alaska, North Dakota, and South Dakota, are served by TheTerminixteam’s vast pest management services. Terminix offers several different tiers of programs, each tailored to meet your specific requirements.

This pest control company provides exceptional customer service, offers flexible pricing, and has decades of expertise in the industry. If you would like to receive a free estimate from Terminix, please contact the firm at 866-569-4035 or complete this short form.


In business for more than a century, Orkin has been resolving pest management difficulties for households across the country. Orkin is accessible in all states with the exception of Alaska, Wyoming, and South Dakota. The organization uses Integrated Pest Management techniques and has received good customer feedback.

Frequently Asked Questions

Are you dealing with drain fly problems that won’t go away and don’t know where to begin? A quick reminder of all you need to know about preventing the situation from getting out of hand is provided below.

What causes drain flies?

Drain flies are attracted to stagnant pools of water, which may be found in pipes and other drainage locations. These little, gnat-like insects live in sewage and feed on it, breeding in the process. Organic debris may quickly accumulate along the sides of drains, providing a breeding ground for drain flies to feed and reproduce.

How long does it take to get rid of drain flies?

The majority of drain fly infestations may be controlled in less than a week with consistent treatment. A pest control specialist may be required if you have a widespread problem with your pipes. This will help you identify and address the source of the larger issue.

Will Drano kill drain flies?

With consistent treatment, most drain fly infestations may be controlled in less than a week. A pest control specialist may be required if you have a widespread problem with your pipes. This will help you identify and address the source of the problem.

Will drain flies go away on their own?

It is unusual that drain flies will go away on their own if you leave standing water in your pipes or on your property to continue to accumulate. Drain flies may even survive the winter in warm homes because of the warmth. After washing out your system, be sure to take precautionary measures to keep drain flies under control. When DIY methods fail and the flies continue to return, we recommend consulting with a professional in order to ensure that you are addressing the entire problem properly.

How to Get Rid of Bugs in the Septic Tank

It is possible for insects to breed within a sewage tank. It is common for homeowners to overlook their septic system until something goes wrong, at which point it is typically too late for a simple fix. Septic systems are dark, wet places where helpful bacteria thrive, but they may also serve as a breeding ground for worms and insects that can find their way into your home down the drains and into your plumbing. The activities a homeowner may take to prevent insects from entering the home and to get rid of them in the septic tank are described below.

Step 1

Pour bleach down each drain in the house, as this will destroy any eggs or larvae that may have gotten into the drain. Pour water down the drain to flush away the bleach and flush any larvae or eggs that have been dislodged into the septic tank.

Step 2

In order to prevent insects such as flies and mosquitoes from entering the drain pipe and finding their way to the septic tank, drain covers should be placed over all of the drains in the residence.

In addition, insects are prevented from finding their way out of the pipe and into the house as a result of this.

Step 3

Request suggestions from your local health agency for a licensed liquid waste extractor or pumper. Determine whether or not you have access to the septic tank from the ground level. Connect a hose to the pump and turn it on. Incorporate the hose into the septic tank through the access port on the side. Using another hose, connect it to the other end of the pump and run it to the waste removal vehicle. Start the pump by pressing the button. Remove the septic water by pumping it out. This eliminates a large number of insects, eggs, and larvae from the septic tank’s collection system.

Step 4

Remove the two to three inches of sludge and silt from the bottom of the tank by liquefying it and dislodging it with high-pressure water. Many of the worms and other burrowing insects will be able to make their homes in this area. Continue to pump out the remaining liquid until the tank is completely emptied.


Don’t ever flush pesticides or other toxins down the toilet or down the sink. It is possible that the tank will leak, contaminating the ground water and perhaps killing the beneficial bacteria that aid in the decomposition of waste. Call a qualified liquid waste remover or septic pumper if you have any questions about your waste. Never pump wastewater into the earth, since this is a hazardous to both the environment and your health.

Drain fly grubs in my septic system.

When I first arrived to the country, I saw a lot of small triangular flies with fur on them. It happened every now and then that I noticed them on the shower cubicle walls. They don’t appear to fly much and they don’t appear to bite. Drain flies are described as follows on the Wikipedia page: “Drain flies are approximately an eighth of an inch wide and have a highly distinctive triangular form.” They have a fuzzy appearance and, if you look closely, you will notice that they have striped wings.

  1. Drain flies are known by a variety of names, including sink flies, filter flies, sewer flies, sewer gnats, and sewage moths.
  2. Check out the Wikipedia article for a comprehensive list of the various variants.
  3. At the most, they are a source of irritation.
  4. Remove this, and the drain flies will no longer be a problem for you.

Where do they come from?

Sewer flies, also known as drain flies, have worked out how to make a home in the sewer systems and drains of homes and buildings. This is due to the fact that they are difficult to wet, making them extremely resistant to soaps and other cleaning chemicals that make their way down the drain. In my home, I avoid using strong cleansers, and they thrive in the shower drain, which is very beneficial in the winter. I don’t appear to be able to find them anyplace else, which may be due to the lower water flow there.

  • When I had my septic system cleaned out this summer, I saw microscopic worms dwelling in the tanks and collected a sample to see what they were.
  • A great number of little worms, as well as larger ones, were swarming in the water.
  • The larvae of sewer flies spend their entire lives in water.
  • They also do not move much.
  • In order for the life cycle to be completed, it takes between 10 and 2 weeks.
  • It creates a pattern on the water’s surface that looks like a constellation of stars.
  • This is where the worm’s breathing hole is set up.
  • Fibrous waste is the yellowish substance on the floor.
  • This shot depicts a bigger pupa that is simply sort of drifting around and periodically putting up a breathing tube every now and then.
  • In the lower right corner, there is also an immature larva.

They are quite difficult to shoot since they are so little and have a tendency to expose their bottoms to the camera. Even if the photographs are tough to take, the movie clearly demonstrates the larvae and pupae in action. If the video does not appear, the YouTube address is as follows:

Are sewer flies dangerous or harmful?

Generally speaking, they stay away from food, they don’t bite, and they don’t normally spread illnesses in temperate climates. With the exception of enormous populations, there are no negative consequences to having a few drain flies wandering around in your yard. They are not very good flyers. Because the larvae develop in still water, where they feed on the slimy organic layer that frequently forms there, ensuring that there is no slimy still water is an effective method of managing the larvae.

  • Cleansing the drains and covering them while they are not in use can disturb the life cycle if you have a large number of drains.
  • The simple act of periodically pouring a bucket of water into seldom used drains and toilets washes away the larvae and goes a long way toward lowering adult populations.
  • They are tenacious tiny grubs that are difficult to entirely remove.
  • Because pesticides and other harmful chemicals are relatively innocuous, sprinkling them around your home may end up causing you more damage than good.
  • Drain flies are discussed in detail on this website from the Kentucky Entomology Department.
  • control of pests It also offers a page on how to get rid of drain flies if that is something you need to do.
  • If you spot any errors, please email me and I will correct them so that we may all benefit:Christine This content is provided for general information and amusement purposes only.
  • This page is the product of my inquisitive nature.
  • I connected the grubs to a little fuzzy fly that makes an appearance in the bathroom on occasion.
See also:  Why Would A 2 Septic Tank Systemneed To Be Replaced? (Best solution)

Drain Flies

Learn how to get rid of those annoying drain flies that keep appearing out of nowhere. Drain flies are a bothersome nuisance that may be controlled and eliminated if they are identified and dealt with properly. Drains provide a breeding ground for them, and they feed on the slimy detritus that accumulates in the drains. We have some suggestions for inspecting them to see if they are drain flies. Finally, we discuss suitable drain fly control treatment options that you may use on your own time and budget.

Many people believe they have fruit flies, although fruit flies are most commonly found infesting rotting fruits and vegetables, rather than in drains, which is why they are less common.

In addition, fruit flies will typically have red eyes, which may be used to identify them from drain flies in a hurry.

Get Rid of Drain Flies |Drain Fly Control Tips

Unless you are certain it is coming from the drains, don’t think it is a little fly or gnat-type insect fluttering around in your kitchen. For identification purposes, look for any probable breeding supplies (small puddles, oil, decomposing organic debris, etc.) that may have been overlooked. If rats are breeding in the drains, using a sanitation drain solution such as Invade Bio Drain will aid in destroying the breeding environment. It is vital to examine for breeding places and eliminate them if they are discovered.

The elimination of the breeding place is a critical component of any drain fly management approach.

Invade Bioproducts should be used to consume the organic debris that the flies are breeding in.

Detect the Breeding Source

Identifying and managing fly infestations will be easier if you are familiar with the different breeding sites for the flies. Drain flies, fruit flies, phorid flies, and sphaerocerid flies are all known to breed in certain locations.

  • Drain flies: Drain flies reproduce in drains, sewers, septic tanks, and soil that has been contaminated with sewage
  • They are also known as sewage flies. Fruit flies: Fruit flies can be found in the vicinity of fresh fruits and vegetables, decaying fruits and vegetables, drains, rubbish, and other moist organic materials
  • They can also be found in the vicinity of rotting fruits and vegetables. Phorid Flies: Phorid Flies may be found in sewage-contaminated soil, waste, drains, human corpses, decaying vegetables and fruit, garbage, and other wet organic items
  • They can also be found in sewage-contaminated soil. In manure, wet organic debris, sewers, decaying fruits and vegetables, and rubbish, Sphaerocerid Flies can be found
  • They are a kind of fly.

Drain Fly Identification and Inspection

  • In addition to having two pairs of wings and antennae, Drain Flies are also characterized by having six legs. Adults are around 1/16th inch in length. The hue of the body can range from tan to a light gray shade. A thick covering of long hairs covers the whole body and wings of the creature, giving the creature a fuzzy look. When in repose, the wings fold over the body and are kept in place like a canopy over the body. Swatted or crushed drain or moth flies will turn into fine dust as a result of their wings becoming fine dust. If they are disturbed, they will hop or fly a short distance to get away. Drain fly larvae are around 3/8″ long, wormlike in appearance, and lack legs. The larvae are gray in hue, with deeper colors on the tips of their bodies.

Inspection-Drain Fly Breeding Sites

  • Drain flies are often seen breeding in drains, which is why they are known as drain flies. These drains are a great spot to start the inspection because they are easily accessible. They frequently deposit their eggs near the drain outlets. They subsist on detritus, which appears as a sticky, humid film on the drain sides and in the drain trap, which they feed on. If you scrape the walls of the container with anything sharp like a knife, you may look for living larvae in the sludge. The larvae have a slimy appearance. If you are unable to detect any of these tube-like drain fly larvae, it is possible that the eggs are located deeper within the pipes. Place a piece of tape (duct or transparent tape) over the top of the drain, with holes cut into it to allow for ventilation. Leave it for the night. The presence of drain flies is indicated by the fact that the flies become entangled in the tape as they depart the drain. To gain a complete picture of your infestation, you may need to repeat the process the next night as well.

More Drain Fly Inspection Tips

  • Drain flies are often seen breeding in drains, which is why they are known as drain flies. These drains are a great spot to start the inspection because they are easily accessible. They subsist on detritus, which appears as a sticky, humid film on the drain sides and in the drain trap, which they feed on. If you scrape the sides with something sharp, such as a knife, you may look for living larvae in the sludge. Make small holes in some tape and place it over the top of the drain to allow for ventilation. The presence of drain flies is indicated by the fact that the drain flies become trapped on the tape as they depart the drain. It is possible for drain flies (moth flies) to enter through a damaged drainpipe in the subfloor of a slab floor. They would establish a breeding ground in the organic waste beneath the slab. Adult flies then enter the living space above the slab through fractures in the slab and then return to the slab through the drain pipe, creating a vicious cycle. Place the masking tape over the crack in the slab as indicated above to see if they are coming up through the slab. Condensation pipes for air conditioners and icemakers should be inspected. Examine any loose ceramic floor tiles that may have accumulated water. A hole must be cut through a slab if it is suspected that drain flies are breeding beneath it. This will allow you to determine whether a pipe has ruptured and flies are breeding there. After a hole has been cut through the slab, it is necessary to delve into the dirt beneath the slab and investigate it. Organic waste and damp soil may be found several inches below the surface of the water. The presence of fly larvae and adults at the location suggests that it is a breeding source for the insects. In most cases, sump pump pits and sewers are located in the basement area and serve as excellent breeding grounds for drain flies (moth flies), which are particularly prevalent in commercial structures. Even if the sewers and pump pits are not in the immediate vicinity of where the moth flies have been observed flying, they should be examined for activity. Additionally, check the pits of elevators in business buildings for any signs of excess water or humidity. Drain flies are most commonly seen reproducing in bathroom drains, particularly those in showers, in residential settings. Weeping shower pans create an ideal breeding ground for moth flies, and the space beneath the pan becomes a breeding ground for them. Dispose away any biological waste that has been trapped in small gaps and crevices under the legs and around the bottom edges of kitchen appliances. Removal of the debris, thorough drying, and application of a long-lasting caulk to seal the crack are all necessary steps. If you suspect that the shower is a cause of the problem, you may need to drill a hole into the area beneath the shower pan or into the wall behind the shower to locate the source. In the majority of situations when moth flies are reproducing in this region, adult flies will emerge from the hole within minutes of the hole being opened. In addition, drain flies are greatly drawn to light and will flock to the hole that has been bored through the wall. Inspect crawlspaces for leaks in the drainpipe
  • If a breeding source is discovered there, the drainpipe should be repaired. Look for the presence of adult flies in your environment. It is possible that spiders have dead moth flies in their webs. Once a breeding source has been identified, the search should not be stopped. In the vast majority of situations, several breeding sources will be present
  • In regions with abundant organic material, such as sink drains, damp mops, sewage treatment facilities, storm drains, manure, and rotting plants, drain flies (also known as moth flies) can be found in large numbers. Re-grouting tiles to prevent water seepage into walls will inhibit the growth of bacteria in these locations. It is necessary to eradicate the source if it is discovered in rotting vegetable debris
  • Clean unclean garbage cans, moist lint beneath the washing machine, and even standing water in containers under houseplant pots are all things you should avoid. Adult flies migrate with the wind, so look for air conditioners, birdbaths, small stagnant pools of water, and sewage treatment facilities outside the property that are upwind. It is also possible for drain flies to reproduce under potted plants in damp, shaded spots such as under bird feeders and mosses bathes, clogged roof gutters, behind air conditioners or under dense mulch, or on wet ground regions. Moth fly larvae feed on the rotting remains of plants and animals in their natural environment. Moth flies are generally considered harmless to humans, yet they have the potential to spread germs and other microbes from their nesting grounds to locations where people congregate. Moth flies are not aggressive and do not bite. Adults have a lifespan of around two weeks.

Drain Fly Treatment Tools: Sanitation Treatment Products, Pyrethrin Aerosols, and Fly Lights

Drains should be treated with Invade Bio Products. It is recommended that you use a drain treatment such as Invade Bio-Gel Treatment to eliminate the organic material, which will improve cleanliness. Invade Hot Spot is a Microbial/Citrus Foam that comes in a convenient 16 oz aerosol can. Using the same high-quality microorganisms and chemicals as InVade Bio Foam, Hot Spot may be applied directly to the affected area in an aerosol can. The 360-degree valve enables for foam to be dispensed in any angle, making it easier to reach difficult-to-reach locations.

  • This means that removing contaminated soil from beneath a slab of concrete and replacing it is the only option to completely eliminate the infestation.
  • Drilling and treating the contaminated soil beneath the slab with residual pesticides does not work, despite the fact that it is time-consuming and expensive.
  • Removal of the debris, thorough drying, and application of a long-lasting sealant to seal the crack are all required.
  • It is a concentrated bio liquid that has been foamed with the help of a foamer.
  • This can be used as a component of an integrated pest control strategy.
  • Use a B G VersaFoamer HHor sprayer to apply to cracks, crevices, and drains where tiny flies breed in order to prevent them from reproducing.
  • Invade Bio Foam is ultra-concentrated and should be blended with water at a rate of 4 oz per gallon (1 oz per quart) before being applied with Foam Sprayers.

Invade Bio Cleaner and Invade Mop Clean are two products that clean organic debris using bacteria, resulting in a considerable improvement in overall cleanliness.

If adults do not disappear within a week further treatments or looking for other breeding sources is needed.

It is not possible to eliminate the buildup in which the flies lay their eggs by pouring bleach down a drain, and it may even cause harm to your plumbing. Invade Bio Drain is a useful tool.

Prevent Moth Flies

Moth fly larvae require moisture in order to thrive, thus they may be found almost anyplace that water collects. In toilet bowls and tanks that are not used on a regular basis, a thin slime layer can form along the water surface. Fly larvae are frequently seen in these types of habitats. Besides basement and garage sink and floor drains, the larvae can also be discovered in condensation drop pans under refrigerators and in sink or floor drains in basements. Keep an eye out for the little, gray larvae that are squirming in the water.

  • Some locations may be quite simple to clean using conventional approaches.
  • Because the fly larvae are so little and easy to ignore, it can be difficult to locate and identify breeding places.
  • It is possible to invert clear plastic cups with a very little coating of vegetable oil or petroleum jelly inside the cup for several days over drains in order to collect emerging adults and locate breeding places.
  • If these examination approaches do not provide results, then the search should be broadened.

Drain Fly Biology and Habits

Drain flies (moth flies) go through a complete metamorphosis in order to mature. The duration of the complete life cycle is between 8 and 24 days. Moth flies (also known as Drain Flies) deposit their eggs in a mass of 30 to 100 eggs in an appropriate medium. These eggs hatch in less than 48 hours, according to the manufacturer. When the moth fly (drain fly) lays its eggs, they form irregular masses in locations like filthy garbage disposal units, water traps in plumbing fixtures, sewage plant filters, and nearly everywhere else where decomposing organic materials are present.

The larvae consume silt, rotting vegetation, and tiny plants and animals as well as a variety of other foods.

The pupal stage lasts somewhere between 20 and 40 hours.

Due to the weak flying ability of the moth fly (drain fly), it is frequently observed strolling or jogging on walls and other resting surfaces.

During the day, the moth fly (drain fly) adult rests in shady locations or on walls near plumbing fixtures, such as the sides of tubs and showers.

During the night, the moth fly (drain fly) adult rests in shady areas or on walls near plumbing fixtures. The moth fly (drain fly) is most active in the evening, when the temperature is cooler. During this time period, they may be observed lingering about the sink areas in your home.

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