Fungus Gnats resemble tiny Mosquitoes. These grayish-black flying insects are very tiny – only ⅛ inch in length.
Fungus Gnats do not bite or feed on humans. They live in damp soil and feed on fungi. Fungus Gnats themselves cause no problems aside from being a nuisance if they swarm, but the presence of Fungus Gnats in your home can indicate a different problem, like the overwatering of houseplants.
Fungus Gnats are common throughout the United States.