Drain Fly

Damp environments with organic matter, such as drains, sewers, septic tanks, and wet compost.

Larvae feed on the gelatinous film of bacteria, fungi, and decomposing organic matter inside pipes; adults consume nectar or polluted water.

Poor fliers that often crawl; they are most active at night. They have a short life cycle of 7 to 28 days depending on temperature.

They do not bite or transmit diseases to humans, but can be a nuisance and may indicate a clog or sanitation issue in plumbing. They help break down organic waste in nature.