Drain Fly Larva

Damp environments with organic matter, such as drains, sink overflows, sewage pipes, and wet compost.

Decomposing organic matter, slime (biofilm), and bacteria found in drain pipes.

They are typically active at night and live submerged in the gelatinous film layer of drains. They undergo complete metamorphosis through egg, larva, pupa, and adult stages.

Generally harmless to humans and do not bite; they actually help break down organic waste in plumbing. However, large infestations can be a nuisance and may indicate a clog or sanitation issue.