Drain Fly

Damp areas with organic matter, such as drains, sewage pipes, and compost piles

Larvae feed on decomposing organic material, fungi, and bacteria; adults feed on liquid carbohydrates

Poor fliers that often crawl on walls; larvae develop in the gelatinous film found in drains

Considered a nuisance pest that can spread bacteria from drains to surfaces; beneficial in the ecosystem as decomposers