Drain Fly Larva

Moist environments rich in organic matter, such as drains, sewer pipes, septic tanks, and wet soil.

Decomposing organic matter, biofilm, algae, and bacteria found in slime layers within plumbing.

Larvae live within the gelatinous film of drains; they are remarkably resilient to soap and hot water. They undergo complete metamorphosis to become small, fuzzy, moth-like gnats.

Generally harmless to humans but can be a nuisance and may indicate a clog or sanitation issue. They help break down organic solids in sewage treatment processes.