How do you prevent drain flies?
Beside this, how do you get rid of drain flies?
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.
Herein, what causes drain flies?
The black or brown flies/moths you see in your drain are most likely “drain flies” that live on decomposing, organic matter in your drains, which explains why they hang out near sinks or showers. These flies are also referred to as: Moth flies. Filter flies.
While this chemical might get rid of some larvae, bleach passes quickly down the drain and does not penetrate the thick build-up where eggs are deposited by the female drain fly and larvae live. As a result, in most cases, bleach does not get rid of drain flies.