Will Vinegar Kill Drain Flies?

Since septic tanks, sewers, and the drains in your home make the ideal habitat and breeding grounds for these types of gnats, it is necessary to find ways to scare flies away by removing their food and breeding sources. Drain gnats are attracted to moist areas that are rich in nutrient-rich organic material.

Adult flies loitering around your drains or other breeding areas is the most typical indication that you have a drain gnat problem.

Covering your sink drain with sticky tape is a surefire technique to find out whether you have a drain fly issue. The tape will catch the flies as they attempt to fly out of the pipe. You may be certain that you are dealing with drain flies if you find any flies on the tape.

However, because they devour the organic stuff that might be obstructing your drain, drain fly larvae might occasionally be advantageous. Sadly, the population can quickly become unmanageable, therefore you should get rid of the drain flies as soon as you can.

Get Rid of the Organic Material

Sewer flies are an issue in your home because of an accumulation of organic waste in the pipes. Older homes frequently experience this issue with their pipes. If you can remove the organic matter, you will eliminate the fly’s food source and successfully get rid of these pests from your home.

You’ll need to shove a metal pipe brush through the pipes to remove the organic material buildup. To ensure that you remove as much of the buildup as you can, move the brush back and forth as far as you can.

Then, to get rid of the source of your drain fly issue, pour a pot of boiling water down the drain to flush the displaced material down the pipes.

Kill them with Vinegar

Killing drain flies is only one of the many household uses for vinegar. Apple cider vinegar is the finest kind to use for this technique because it will help get rid of drain flies in your home without using harsh chemicals. Here is a simple method for killing drain flies that works well.

How to Get Rid of Drain Gnats using Vinegar

  • One-fourth cup cider vinegar
  • one glass
  • Polythene wrap

Fill the glass with vinegar, then wrap it in plastic. Make a few tiny holes in the plastic wrap, then place the trap next to the drain. The gnats will be drawn to the vinegar by the vinegar.

When this happens, the drain flies will fly into the glass, dive into the vinegar, and eventually drown. These fly traps can also be used to get rid of fruit flies and fungus gnats in your home.

To get rid of pantry moths that may have settled close to your food or to get rid of spider mites in your houseplants, add apple cider vinegar to a spray bottle. It is a straightforward yet powerful insect control method.

Baking Soda and Vinegar Recipe for Drain Flies

  • 50 ml of baking soda
  • Vinegar, one cup

Pour the baking soda into the drain first, and then gradually pour the vinegar in. The mixture should begin to bubble and fizz, and it might even emerge through the pipe. Spend roughly an hour letting the solution rest in the drain. A kettle of boiling water should then be poured down the drain.

Baking soda and vinegar fizz and bubble, killing any flies, eggs, and larvae that may be hiding inside the drain and liquifying any organic matter that may accumulate in your pipes and drain. All the debris is washed down the drain using the hot water.

These materials can also be combined to make a spray bottle that can be used to eliminate various insects in the home. You won’t have to worry about moths, ants, roaches, or any other pesky crawlies anymore thanks to this remedy.

Use Bleach

You might think about using bleach to get rid of drain gnats if you don’t have any vinegar in your pantry or if you want to employ a tougher pest control technique. Pour one cup of bleach and ten cups of water down the drain to apply this technique.

Before flushing the pipes with cold water, let the combination stay in the mixture for a few hours. The sole disadvantage of this approach is that, unlike baking soda and vinegar, it doesn’t scrub the pipes.

These three organic techniques are not only effective at getting rid of existing drain flies, but if you apply them frequently, you can keep your pipes and drains clean and avoid any additional infestations. The best part is that these techniques are easy to use and don’t involve spending a lot of money on ingredients or products.

We hope you liked reading about these easy natural ways to get rid of drain gnats. Please feel free to share this article’s material with your loved ones and friends if you find it to be useful.

What eradicates drain flies right away?

Even though strong pesticides can get rid of unwanted animals, they might be dangerous for the rest of the family. The best course of action is usually to start with natural therapies. The first two techniques employ organic substances that you most likely already have at home:

Natural Method #1

  • Pour a pot of boiling water down the drain with caution. The sewer flies will perish in the heat. Reduce the temperature and use hot water in its place if you are concerned that the boiling water may cause any surfaces to fracture.
  • Pour one cup of white vinegar into the pipes to eliminate any residual eggs that might be stuck there.

Pouring hot water down the drain once a week as maintenance will stop the issue from happening again.

Natural Method #2

  • Pour one cup of vinegar, one cup of baking soda, and half a cup of salt down the sink. Baking soda will bubble and fizz as a result of the vinegar and baking soda’s reaction. The larvae will perish as a result of this reaction.
  • After leaving the mixture overnight, flush with hot water the next morning. This should eliminate the bugs and larvae and leaving your pipes sanitized and clean.

Natural Method #3

This technique will perform best when combined with one of the other two techniques:

  • Pour apple cider vinegar into a cup or basin.
  • Put plastic wrap over the top and make a few tiny holes in it.
  • Put down wherever you notice adult drain flies gathering.

The smell of the ACV will attract drain flies, but they won’t be able to leave in that direction. You should combine this with one of the natural drain cleaner techniques because it does not deal with the issue of the larvae that are still present in the drain.

The following strategies work well if you need something more powerful to deal with your drain fly problem. When using store-bought drain cleaners, be sure to follow the manufacturer’s instructions and AVOID combining vinegar and bleach.

Chemical Based-Method #2

  • Follow the instructions on a bottle of store-bought drain cleaner by pouring it down the drain to unclog a clog. Knowing that harsh drain openers can damage older pipes and do more harm than good, many plumbers advise against using them.

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Which vinegar specifically kills drain flies?

You already know how annoying drain flies can be if you’ve ever had to deal with them. They typically originate from floor drains, although they can also go into less regularly used drains. Fortunately, there are a number of efficient methods for eliminating drain flies.

The following techniques for eliminating drain flies and their larvae are advised by Roto-Rooter, America’s top provider of plumbing and drain services.

Pour a half-gallon of water down the drain first. The drain is in good working order if the water drains away fast. If at all feasible, add a pan of really hot water to destroy any larvae. (Keep in mind that some surface materials can shatter when exposed to boiling water.)

Add a cup of white vinegar next. The larva inside the pipe should be eliminated as a result. Despite being harsh and potentially harmful, bleach is sometimes recommended. Avoid combining vinegar and bleach because doing so will result in the production of hazardous chlorine gas. Remove the bleach bottle’s cap, then fill it with bleach. After that, throw the bleach capful down the drain. That much bleach will kill all of the insects and their larvae that are inside the pipe.

A number of other commonplace products, including white vinegar or bleach, will also kill drain flies. Just be careful not to combine any of these mixtures or you could put yourself in danger. Add one cup of white vinegar, one cup each of salt and baking soda. Allow it to do its job during the night, and then the following morning, flush the drain with hot or boiling water. The drain will be sanitized and the flies and their eggs will be eliminated.

Are vinegar-attracted drain flies a thing?

The cider vinegar will draw flies, who will then try to enter and drown. Bio-Clean, a natural product, is a nontoxic, eco-friendly drain cleaner that consumes the organic material clogging your drain. The flies will start to disappear once the drain is cleansed.

What may be used as a drain cleaner to kill fruit flies?

  • Pick up a drain brush “The best course of action, according to Troyano, is to mechanically clear the buildup from the drain with a drain brush. The fruit flies ought to disappear as soon as the muck is removed, she claims.
  • Invest in a drain cleaning. Troyano claims that using drain cleaner can also be beneficial. Utilizing a drain cleaning solution “helps in the physical cleansing and assist in dissolving the buildup, she explains.
  • Down the drain, pour vinegar. alcohol can be “Ben Hottel, technical services manager at Orkin LLC, claims that this will aid in the bacterial breakdown of the food particles in the drain. In essence, it can assist in moving the fruit flies and food out of your pipes while also breaking down the food.
  • Make your own drain cleaning solution. Pour one cup of vinegar, one cup of baking soda, and one half cup of salt down the drain. A few hours later, you can follow it with hot water.” According to Troyano, doing so might aid in dissolving the drain buildup. “I would advise utilizing a drain brush to perform mechanical cleaning after this.
  • Pour hot water down the sink’s drain. If vinegar, baking soda, and salt are not readily available, you can try just pouring boiling water down the drain.” This might be helpful, but Troyano advises that it should be combined with physical cleaning to eliminate the particles mechanically.
  • Never flush food down the sink. It is preferable to dispose of food in your garbage can rather than washing your dishes if you don’t have a garbage disposal (or if yours is broken).” According to Hottel, cleanliness problems are the root of a lot of fly infestations in homes. “Always discard spoiled food, empty the trash frequently, and keep your kitchen free of food scraps.

There may be suggestions for using a bleach solution online, but Troyano thinks that’s not likely to work. “She claims that pouring bleach or other harsh chemicals down a drain to stop flies from breeding rarely works. ” Because they are so little, fly larvae can scurry inside the slimy accumulation. They will effectively be protected from the bleach by the organic waste.


We had a fly infestation at the end of last summer, primarily in our downstairs bathroom. We identified them as drain flies, cleaned the drains in that room extensively, and eventually got rid of them. However, they’re back now! Do we simply keep cleaning the drains indefinitely?

I’ll start by asking a few questions. (1) How were they “decided to be drain flies? Was the identification done by a pest management expert? (2) How were the drains cleaned? Drano, hot water and soap, or a drain cleaning with enzymes? You used a scrub brush, right? (3) Other than the bathroom drains, have you looked for any other places where flies might breed? The answers to these questions are crucial because any improper turn could account for why you are still experiencing issues.


Small flies of at least three different species, all of which have like behaviours, can breed in slimy, stinky drains. The most prevalent are probably drain flies, often known as moth flies (see Bathroom Flies That Look Like Little Moths?) However, drains and many other fermenting or decomposing items will attract tiny phorid flies and dark-eyed fruit flies. These flies’ larvae or maggots, which eat the gelatinous slime that develops inside the pipes, reside inside the sewers. Fly adults emerge from the breeding areas, though they might hang around.

People frequently fail to know how resistant the scum and the larvae are to caustic drain cleaners, boiling water, bleach, detergent, and even these methods of drain fly management (see How Can I Get Rid of Drain Flies?). Usually, the larvae survive the attack. To remove the sludge from the drain, a scrub brush with a long handle works well. However, a pest control expert with a biocide drain cleaning system, which utilizes enzymes or bacteria to dissolve and remove the organic film in the drain, is by far the best way to combat drain flies. The larvae and the flies will disappear once the drains are spotless and there is nothing left to eat.


The presence of drain flies again could be caused by a secondary infestation that was not identified or treated, in addition to ineffective control methods. Flies might be breeding in other bathroom drains, a floor drain, a laundry room drain, or a sump pump.

All of the tiny “wet gunk gnats” can also spawn in a variety of locations that have ripe, decomposing, or rotting semi-liquid organic materials in addition to drains. For instance, filthy potted plants, filthy trash cans or recycle bins, drip pans under appliances, or stagnant water in a mop bucket. In exceptional circumstances, and particularly if phorid flies are present, the fly outbreak may not be caused by the drain itself but rather by a sewage line break or crack, necessitating the assistance of a plumber.

By hiring a pest control expert, you can save a lot of time and frustration. With Colonial Pest, your drain flies will be permanently eliminated with minimum disruption for you and frequently without the need for chemicals. Even better, since we guarantee our job, if the drain flies return, so do we!