Place a slice of potato on the soil surface and check periodically for larvae.

Bacillus thuringiensis, subspecies israelensis, strain AM 65-52 (e.g. Knock Out Gnats) applied to the soil. It is only effective against larvae.

Repot with fresh soil in a clean container after washing soil off the plant roots.

Let surface soil dry as much as possible between waterings, without letting the plants wilt.

Yellow sticky traps will capture some adult flies. But, traps only help to detect adults and should not be relied on as the only management method.

used at the rate of one trap per 250 square feet