Drain Fly

Commonly found in bathrooms, kitchens, and basements near drains, grease traps, and sewers.

Larvae feed on organic matter and biofilm (slime) found in drains; adults subsist on nectar and polluted water.

Mainly active at night; they are poor fliers often seen crawling or making short hops. They breed in gelatinous films in pipes.

Harmless as they do not bite; however, they can mechanically transport bacteria from sewers to clean surfaces. Larvae help break down drain-clogging organic materials.