Drain flies are small flies that have a light gray body and can be found on bathroom, basement, and kitchen walls. They feed on organic material and use clogged drains as breeding sites. Drain flies do not bite, but can be become a problem for home owners if the population of drain flies becomes excessive. The only way to get rid of drain flies is by removing the material that is clogging the drain and being used as a breeding site. No liquid drain cleaner will clear this type of drain clog so the only way to get rid of this clog is to physically remove the clog. Contact us if you are beginning to notice a problem in your property with drain flies.