Will Drain Cleaner Kill Drain Flies?

If you’re wondering whether you can just use a drain cleaner to kill drain flies, then you’ve found the right article. In this article, not only will you find out whether drain cleaner will kill drain flies, but you’ll also learn what else you should do to make sure they won’t come back as well as other alternatives!

So keep reading to find out everything you want to know.

Will Drain Cleaner Kill Drain Flies?

Yes! Drain cleaner is an effective way to kill drain flies. Not only will it kill the adults, but it will also kill their larvae and eggs as well. On top of this, because drain cleaners unclog drains and remove grime, it’s also going to make the pipe a lot less appealing.

Why Is Drain Cleaner So Good At Killing Drain Flies?

Drain cleaner is so effective at killing drain flies because it effectively dissolves everything it comes into contact with. Not only will the drain flies be dissolved, but all their food and breeding areas will be dissolved as well!

How To Use Drain Cleaner To Kill Drain Flies

If you want to kill drain flies with drain cleaner, then it’s always best to follow the instructions on the back of the bottle. However, if, for some reason, you can find these, then you’ll simply need to do the following.

Prior to anything else, make sure you’re wearing appropriate safety equipment as drain cleaners are very potent. Gloves and goggles are essential since you don’t want to accidentally get them in your eyes or on your skin. Once you’ve done this, you only need to pour about 16 ounces of drain cleaner down your pipe and wait 15 minutes.

In cases where there are a lot of drain flies or the pipe is filled with grime, then you can also wait 30 minutes to make sure you’re removing as much as possible.

Once the allotted time has passed, flush the drain with hot water to get rid of all the drain cleaner in the pipes.

You can also use drain cleaner on a frequent basis to maintain your pipes and lessen the likelihood of a future drain fly recurrence.

Other Steps To Take

However, if you just use Drano to remove drain flies, and don’t take other steps, then the chances are that the drain flies will just return once the Drano has worn off. So as well as using Drano, you should also:

  1. Make sure any clogs or blockages in your drain have been removed as well. A great chemical for this is Drano Max Gel Clog Remover.
  2. As well as this, you’ll also need to kill any drain flies you see in your house as well. It only takes one pregnant drain fly to lay loads of eggs, and then you’re back to square one. (Fly sprays are the go-to choice for this.)
  3. It’s also not a good idea to mix Drano with other chemicals either. Doing so can cause toxic gases to be released, as well as potentially reduce the effectiveness of both.
  4. Look for other areas where there may be a drain fly infestation. Normally, they can be located in areas with standing water. In fact, sometimes, the main infestation could even be coming from outside your home.
  5. You can also mix apple cider vinegar with hand soap to trap any adults and kill them as well.
  6. Give the drain pipe a thorough clean with a drain cleaner or brush to make sure you’re removing any places the drain flies can breed again.
  7. And lastly, in severe cases, sometimes the best thing to do is hire a professional to get rid of them for you!

What Causes Drain Flies?

Drain flies are attracted to dirty environments. Standing water and an unclean environment are among the most common causes of drain fly infestations. These cause drain flies because they are damp environments with plenty of nearby nutrients.

Pay attention to your hygiene, which can attract drain flies if it is ill-kept. Personal hygiene is essential for keeping drain flies away from your home. 

Stagnant Water

Stagnant water is the most common cause of drain flies. They are attracted to the non-sterile environment. They are most commonly found around leftover food sources and bacteria, so they prefer sinks full of dirty dishes.

Poor Body Hygiene

Poor body hygiene will attract drain flies because of foul odor and the dampness from body sweat. They will not lay eggs on the human body. However, the smell of body odor and the results of poor hygiene often attract this insect. Examples of poor hygiene might include excess trash lying around your home, open water or drink bottles, and other forms of debris that make great nesting grounds for the drain fly.

Lack of Running Water

Drain flies are more likely to be attracted to areas lacking running water. If you can find somewhere with running water, it is better at keeping drain flies away. If you have a sink that does not work correctly, hire a plumber to investigate the issue immediately so drain flies do not lay eggs in your pipes.


Outdoor drains are much more accessible to drain flies than indoor sinks. Therefore, you are much more likely to have drain flies in outdoor drains than inside your home. To prevent drain flies from nesting inside your outdoor drain, regularly use a white vinegar solution at least twice a month.

Is Drain Cleaner The Best Choice?

Because drain cleaner is so powerful, it may not be the best choice for removing drain flies. Drain cleaner can cause damage to your pipes and building if the pipes are old. Most pest removers use enzyme cleaners to get rid of drain flies instead.

Not only are enzyme cleaners just as effective as drain cleaners, but they’re also harmless to your pipes too. You can pick up enzyme cleaner here.


As you can see, drain cleaner is a great way to remove drain flies from your home; however, enzyme cleaners are a much better option. As well as this, you’ll need to make sure you’re taking other precautions to make sure drain flies don’t return again!

If you liked this article, make sure you check out the rest of the website! Otherwise, have a great day!

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