Get Rid of Drain Flies

Identify & Treat Infestations

Drain flies lay eggs in a mass of 30 to 100 at a time and hatch in less than 48 hours! Dirty garbage disposal units, standing water, pipe traps in plumbing fixtures, or other locations with organic material buildup are prime areas for infestation.

drain fly identifications

What Do They Look Like?

There are many types of small black flies. Drain flies, also known as sink flies, filter flies, or sewer gnats are small “true” flies. These flies can inhabit plumbing drains, sump pits, sewage systems, and piping. They are generally harmless, but will continue to reproduce unless treated. Expect to find them mainly in bathrooms and kitchens.

Drain flies, or sewer gnats (Psychodidae) are small black flies with wings that appear heart shaped at rest. They do not move like typical houseflies, rather, they fly in short hops and only for a few feet. Their wings have a fine coat of hairs, which makes them look like small moths. When crushed, drain flies leave behind a powdery residue. Learn how to identify drain flies.

Where Do They Come From?

Like their name suggests, drain flies are most commonly found in drains ad damp areas including:

basement floor being opened to fix sewer line


Treating Drain Flies

It is possible to treat common drain fly infestations at home without calling expensive professionals. The key is to find, control and eliminate their breeding sites. Finding their breeding areas is the first step towards a successful treatment program. See this information above before proceeding.

dirty pipes with organic matter buildup
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