Drain Fly

Moist areas rich in organic matter, such as drains, sewers, septic tanks, and damp soil.

Larvae feed on the gelatinous film of bacteria, fungi, and organic debris found in drains; adults feed on nectar or polluted water.

They are weak fliers and often crawl on surfaces. They are most active at night and are frequently seen resting on walls in bathrooms or kitchens near plumbing.

They do not bite or transmit human diseases, but their presence can indicate a plumbing issue or a buildup of organic matter. They act as decomposers in the ecosystem.