Lava-Lite No Gnats 1 Litre (NG1LTRB) is a simple, 100% natural solution to the eradication of fungus gnats. Fungus gnats are small, black flies that are commonly found around potted plants. They are attracted to moist, warm soil and can lay their eggs in it. By creating a barrier between the soil and the air, NO-GNATS inhibits the ability to lay eggs in the soil. It also offers the added benefit of being a pH neutral product that can be used with any household plant variety and its composition increases moisture retention. Choosing NO-GNATS is a sound ecological decision, with no harmful chemicals or pesticides.