Will Bleach Kill Drain Flies | How to Kill Drain Flies

Drain flies are harmless pests but can be a serious nuisance. In this article, you’ll know, will bleach kill drain flies and how to get rid of them for good!

What Are Drain Flies?

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Drain flies are tiny, dark-winged, pests of gray, black, or brown color. Their whole body is covered in hair and leaves a powdery substance when squashed. Drain flies often lay their eggs and develop on sitting water. This situation commonly arises when you don’t flush out the drain pipes regularly.

The common name of drain flies are:

  • Sink flies
  • Filter flies
  • Sewer gnats
  • Moth flies

Will Bleach Kill Drain Flies?

Bleach may help you to get rid of existing drain flies. However, it’s not effective against drain flies’ eggs and larvae. Because it quickly moves through the drain, failing to eliminate the build-up, where their eggs and larvae are deposited.

How to Get Rid of Drain Flies With Bleach?

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Bleach is a potent disinfectant, not only for fabrics but also for any type of surface as well. Try the below quick hack that may help you to get rid of drain flies for good!

  • To eliminate these little pesky insects, first, pour a bucket of boiling water into the drain.
  • Now, simply add one part of non-chlorine bleach along with five parts of water into a container and mix them well.
  • Once it’s done, empty this solution into the drain and let it sit for the whole night.
  • In the morning, flood the drain with lots of hot water, to remove any leftover moth flies present in the pipes.
  • Although, this method does its job in the first trial, but redo it once again to eliminate drain flies infestation completely.

How to Prevent Drain Flies?

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Other than trying the above remedies, it’s also important to prevent the infestation of drain flies in the first place!

  1. Always keep your home drains clean using either homemade cleaning solutions or chemical cleaners.
  2. Having stagnant water on the surface, or in the pipes, is also a major cause for moth flies infestation, that’s why it is essential to eliminate the sitting water regularly.
  3. Make sure that you cover the drains that are seldom in use.


  • Do not use the combination of bleach and vinegar, as their reaction can produce dangerous chlorine gas.
  • Always wear protective gear such as face mask and hand gloves.
  • Make sure to use non-chlorine bleach as chlorine-based bleaching products can be harmful.

After reading the above article, we hope you’ll know everything about the drain flies and how to get rid of them effectively using bleach. Besides, try these economical home remedies to unclog your bathtub. If you have any queries in mind, then feel free to hit the comment button below!

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