Drain Fly Larva (also known as Moth Fly Larva or Sewer Gnat Larva)

Found in moist, organic environments, frequently in bathroom or kitchen drains, sewers, septic tanks, and wet compost or soil.

Feeds on decaying organic matter, sludge, algae, bacteria, and fungi found in drains and stagnant water.

Larvae are semi-aquatic and breathe through a tube at their posterior end; they are resilient and can survive hot water and soap; adults are poor fliers and are nocturnal.

Generally harmless to humans (do not bite or sting), but can be a nuisance pest; they can potentially transmit bacteria mechanically from sewage to surfaces; beneficial as decomposers in natural environments but undesirable in homes.