How to Get Rid of Drain Flies (Sewer Flies)

How to Get Rid of Drain Flies

So How to Get Rid of Drain Flies? Moth-like flies that hang around your drains? Learn what attracts them and how to get rid of drain fly infestation in a quick, easy way!

How to Get Rid of Drain Flies

Stagnant water in the home is not only unsanitary, but it can also cause costly problems. A sink or drain that sits unused will often accumulate an excess of both organic materials such as hair and debris from dishes left out for too long; however there are some precautions you should take to prevent any unwanted backups before they occur!

 Bathroom drains can be a particularly nasty place for small, winged insects to congregate. If you’ve noticed an abundance of very tiny moth-like creatures around your sinks and tubs, then there’s probably drain flies. You might be surprised to know that these pests can reproduce in just 48 hours. Which makes it easy for them to infest your home.

When it comes to getting rid of drain flies, you have options. As simple as they may seem at first glance and even if the infestation has been going on for some time now – there’s always hope!

In this guide we’ll answer all your questions about how best get these pests out immediately while providing helpful tips from a professional pest control company that can assist in future situations should they arise again.

What Are Drain Flies ( Sewer Flies)?

Drain flies are often called “moth flies,” but the most popular nickname is probably sewer fly or sink fly. Drain flies are commonly found in drains and sewer systems. They are about the same size as gnats and fruit flies—between 2mm and 5mm, but can be distinguished by their small furry wings which give them a moth-like appearance.

Sometimes it can be difficult to distinguish them because they both have small wings like moths.—though drainfly’s coloration has been likened unto black rather than dark gray or olive green shades seen on other houseflies

Drain flies have a lifespan of between eight and 24 days, but they can lay 300 eggs in just 48 hours. That means one infestation could create an endless supply for generations if left unchecked!

Drain fly larvae feed on organic matter like food scraps or animal droppings that accumulate inside your drains because these creatures are extremely adept at navigating dark spaces—some may even live under sinks or behind walls without being seen by most humans as they crawl around looking for anything edible within arm’s reach. It’s important to get ahead of the problem before they have a chance to spread.

Sewer Flies Control

Sewer flies, also known as drain flies, or sewer gnats are a common nuisance for homeowners. They are attracted to organic matter and moisture, and can be found in most drains, especially those in the kitchen. Despite their small size, sewer flies can multiply quickly, so it’s important to take steps to reduce their presence in and around your home.

The first step in controlling drain flies is to locate and remove their breeding ground. Drain fly eggs are laid in and around drains and can survive even in small amounts of water, so it’s important to inspect your drains and look for any signs of eggs. To prevent eggs from being laid, you can cover your drains with a drain cover or use a drain snake to remove any organic matter that has built up in the pipes.

Sump pump pits

If you have a sump pump pit around your home, it is important to check it for any signs of sewer flies and their eggs. These pits can create an ideal breeding ground for these flies, so it’s important to make sure that the area is clear and free from any organic matter. You should also check for any leaks or standing water in the area and repair them if necessary.

You should also inspect any faucets or fixtures around your home for any signs of sewer flies or their eggs. Sewer gnats love moist environments, so it’s important to keep any contaminated water out of your kitchen sink or other areas where they can thrive.

By taking these steps, you can reduce the presence of drain flies and their eggs in and around your home. If you have any further questions or need more help, you can always contact a professional pest control specialist for advice.

Where Do Drain Flies Come From?

These pests love sewage and stagnant water, so they are often found congregating around:

  • Kitchen and outdoor sinks
  • Shower and bathtub drains
  • Basement sinks (especially those that go unused for some time)
  • Sewers
  • Septic tanks
  • Soil that contains sewage

Drain flies are attracted to stagnant, low water and can lay eggs in the film that forms on pipes when it’s not being used. This means they may also like: 

  • Wet mops and buckets
  • Compost piles
  • Storm drains with standing water
  • Wet areas around the garbage, birdbaths, or barns

What Do Drain Flies Eat?

Drain flies are a common problem in homes, restaurants and other buildings. The presence of these small insects is often caused by organic material found within standing water which can include sewage or other contaminated drinking sources like rainwater runoff from roofs when it causes film to build up on pipes with stagnant waters inside them 

Drain Flies feed primarily off anything moist that they come across but will also eat animal waste near garbage bins as well as plant composting . If you see swarms around your sink for example then there could be thousands more living underneath our house !


Are Drain Flies Harmful?

Drain flies pose no threat to humans. Though they live in sewage and bacteria-rich environments, Drain Flies are not disease carrying insects like mosquitoes or fleas that could carry germs into your home with them; but if you see a swarm of these pests around the sink drain for example then it’s best to contact an expert because there might be more than meets eyes!

Drain flies are pesky little creatures that like to hang out in drain pipes. They can be a pain because they reproduce quickly and spread nests throughout your pipes–clearing them all out can be costly if left unchecked.

How Can You Tell If You Have Drain Flies?

Have you noticed these tiny moth-like flies around your home? They may not be a welcome sight, but they could mean there is an infestation growing in the pipes. You can tell if more drain flies are living and breeding in your pipes by checking a few different things.

Duct Tape Test

Place a piece of duct tape over your drain and seal it off for the night. Drain flies will eventually try to come up, but they’ll get stuck on their way out- giving you an indication as well that could give insight into how much infestation has grown in this area! Repeat several nights in a row to fully assess the issue.

Check for Larvae

How do you know if your drain flies have laid eggs? You’ll see thin, tube-like creatures that look like anemones. They can be found at the opening of a clogged up sewer line or even deeper within pipes in older homes with outdated plumbing systems

Drain flies frequently lay eggs in the organic material that builds up right at your drain. Remove it and look for thin, tube-like larvae or maggots to determine if there are any infestations deeper within pipes they might be making their way towards a nearby opening you don’t want them coming out into!


Ways to Get Rid of Drain Flies

Depending on the degree of your drain fly infestation, you can take a natural or chemical route to get rid of these pests. In many instances it is possible for homeowners with common items found in their kitchen and/or under sink counters – such as boiling water-to quickly kill off any pesky flies that have been buzzing around at night!

Natural Ways to Get Rid of Drain Flies

In some cases, simply flushing out your drains can remove both the fly larvae and any temptation for them to return. Use these methods as preventative or management tactics when you have an infestation so that they don’t come back!

Boiling Water

The simplest method to clear out your drain fly issue is to pour boiling water carefully down the drain 1-2 times a day for about 7 days. This will ensure that pesky flies do not return overnight if their favorite drinking hole (i.e., sink) was blocked by organic material build up inside!

Baking Soda + Salt + Vinegar

One of the most effective ways to clean your drain is with a natural combination of baking soda and white vinegar. Just pour it down overnight, wait until morning when you flush out any excess mixture that hasn’t reached all parts; then use boiling water as always!

Soap + Water + Sugar + Vinegar

Add a few drops of dish soap to water, sugar and apple cider vinegar. Leave out for days near the drain so that flies are attracted by the sweet solution trapping them in its thickness!

Apple Cider Vinegar + Plastic Wrap

There’s no need to send your flies out looking for happiness when you can trap them with this easy-to-make fly trap. Simply cover a bowl, jar or mug in plastic wrap and fill the bottom up an inch deep of apple cider vinegar. Punch small holes into it so that only fresh air gets through but not any bugs trying to escape back up top!

Drain + Duct Tape

If you want to get rid of pesky drain flies, seal up your sink with duct tape overnight for several nights in a row. This will catch any that try their luck and make it all the way to the surface.

How to Get Rid of Drain Flies with Chemicals

Since drain flies often live in or around your pipes, common cleaners and substances for clearing drains can also get rid of these pesky pests. When you do use chemical cleaners though always read the instructions carefully as well as not mixing them up with other cleaning products 

Traditional Drain Cleaner

After flushing your drain with warm water and giving it a pass with a metal pipe brush, you can clean out the remaining residue using any number of popular products.  Be sure to check if it is safe to use these products more than once if necessary and if they can be used in drains.

Chemical Sprays and Repellents

Many common pest control killers, typically for fruit flies or gnats, can also be used to kill drain flies when the pests are listed on their labels. Since many of these contain caustic chemicals, check if you should keep them out of the kitchen area and be extra careful about damage to your drains.

  1. Green Gobbler: This popular fly killer is safe to go down drains, septic systems, and even garbage disposals.
  2. Natural Armour: This gel-based drain cleaner is ideal for tricky pipes that require an expansive cleaner to catch any additional nests or flies.
  3. American BioSystems: Typically recommended for commercial drains, this is an extreme option for clearing bacteria out of drains, specifically when dealing with a drain fly infestation.

How to Prevent Drain Flies

Drain flies like to find pools of sitting water that contain organic material. To prevent infestations, clean your pipes on a regular basis with either soap solutions or flushing water and close any drain that goes untreated for days at least once before you start seeing them around too much!

Outside of your drains, it’s important to keep an eye out for standing water in other areas around your home. Make sure you have healthy septic systems and clean up any spills immediately as they can cause major problems down the line!

Always keep an eye out for early signs of an infestation, you never know when you might have an infestation until it’s too late.  Drain flies are often the first sign that your drain needs attention, so keep a lookout for these pests and take action before things get worse!

Professional Drain Fly Control

Local professionals know the best way to eliminate drain flies is with proven methods. We’ve reviewed all-time pest control providers and these are our favorites, based on experience, price point or customer reviews for eliminating those pesky little pests from your drains!

Frequently Asked Questions

Many homeowners find themselves dealing with persistent drain fly issues and not sure where to start. Here is a recap of all you need to know about stopping the problem before it gets out of hand, so that your home can be free from pesky flies for good!

What causes drain flies?

Drain flies are tiny, gnat-like insects that feed on and reproduce in sewage. They can build up along the sides of drains quickly due to stagnant water left behind by a slow flowing drain or pipes which welcomes these bugs as well!

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

Most drain fly infestations can be managed in under a week with persistent treatment. If you have an issue throughout your pipes, it is best to consult a pest control professional and get the root cause resolved before things get worse that way less work will need do clean up


Will drain flies go away on their own?

Drain flies will not go away unless you take preventative measures after flushing out your system. The standing water in pipes or property attracts drain flies, and they can cause quite a problem for homeowners without taking any action at all!

These insects are especially bothersome during winter when warmth helps their populations grow even further than normal due to decreased ventilation rates

If you’re not sure how to get rid of flies yourself, we recommend speaking with a specialist. They can assess the whole issue and make sure that you are treating it correctly so they don’t come back more than once!

Other Pests

If you’re worried about a potential bed bug infestation in your home, you may want to check out this article on Early Signs Of Bed Bugs for helpful information.


For more information on how to get rid of moths, check out London Pest Control Services For Moths

Bed Bugs

If you’re wondering what bed bugs look like, check out this helpful article: What Do Bed Bugs Look Like?


If you’re looking for a professional to take care of your mouse pest problem, then check out this page on mice pest control services offered by Bon Accord, local pest control experts.


If you‘re looking for an effective way to get rid of rats in your drainage system, then be sure to check out this helpful article on How to Kill Rats in Drainage.


This article on Types of Carpet Beetles in the UK provides valuable information on how to identify and control these pests.


Using natural methods and the best sprays to get rid of cockroaches can help make your home a more comfortable and hygienic environment. Check out this article for tips on how to effectively get rid of cockroaches: Getting Rid of Cockroaches: The Best Sprays & Natural Methods.


Silverfish Control is made easier with Bon Accord‘s silverfish killer in London, providing an effective and reliable solution to combat these pests.


Removing cluster flies from your home can be a tricky task, but this article provides some helpful tips on how to get rid of cluster flies for good!

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