Drain fly larva

Natural Habitat

Typically found in moist environments containing organic material, such as drains, septic tanks, grease traps, and damp soil

Diet & Feeding

Feeds on sludge, slime, fungi, algae, and decomposing organic matter within the gelatinous biofilm of drains

Behavior Patterns

The larvae live within the slime or film of plumbing. They undergo full metamorphosis with a larval stage lasting roughly 9 to 15 days, followed by a short pupal stage before emerging as adult fuzzy-winged flies

Risks & Benefits

They are not harmful to humans or pets as they do not bite or transmit diseases, but their presence can indicate a hygiene issue or a leak; they can be a nuisance in large numbers

Identified on: 1/8/2026