Drain Fly Larva

Damp environments containing organic matter, such as drains, sewage pipes, septic tanks, and wet soil.

Consumes the gelatinous biofilm of bacteria, fungi, and decomposing organic matter found inside plumbing and drains.

The larvae live within the slime layer of drains. They are able to survive in low-oxygen environments and are often noticed when they crawl out of sink or bathtub drains to pupate.

Generally harmless to humans and do not bite. While they can be a nuisance in large numbers and potentially spread bacteria from sewage through mechanical transfer, they also provide a benefit by breaking down organic clogs in drain pipes.