Drain Fly (also known as moth fly, filter fly, or sewer gnat)

Humid areas near decaying organic matter, such as bathroom and kitchen drains, sewers, septic tanks, and damp soil.

Larvae feed on gelatinous organic sludge, algae, bacteria, and fungi lining drains and pipes. Adults feed on liquid plant nectar or polluted water.

Poor fliers that typically make short, erratic hops or flights. They are weak fliers and often stay close to their breeding site, clinging to walls and fixtures near drains.

They do not bite or transmit human diseases, so they pose minimal health risks. However, they can become a nuisance pest in large numbers, indicating a buildup of organic matter or clogged drains.