Drain flies DelmanExpert Pest Control Service
Drain flies, or moth flies, are small, darkwinged, non-biting gnats. Their wings are covered with scales so they disappear in a cloud of fine dust when swatted or mashed. These nuisance gnats can be found resting on walls or ceilings, and make short hopping flights if disturbed. They can live most anywhere that water accumulates for a week or more. Common indoor sites include the fine slime layer that develops along the water surface in infrequently used toilet bowls and tanks, in sink or floor drains in basements or garages, or drain pans under refrigerators. Sometimes the gray, wriggling larvae can be seen swimming in the water. These areas need to be cleaned thoroughly with attention to removing surface films. Drain flies can breed outdoors during the summer with adults entering homes through open doors or windows. Low, wet areas where air conditioning units drain, or clogged guttering are excellent places for these insects to develop. It’s true that drain flies do not bite humans, but in large numbers, drain flies can become quite the nuisance. Since drain flies do not bite or transmit diseases, they don’t pose any health concerns. To properly remove drain flies, homeowners should contact a professional pest control expert.