The Only Fungus Gnat Control With no Harmful Pesticides Or Chemicals. Growstone Gnat Nix is the only scientifically-proven, chemical-free fungus gnat control on the market.
It’s not just free of harmful pesticides and chemicals, it’s made from 100% recycled glass. Plants love it. Gnats don’t. Gnat Nix! is: Non-toxic, chemical-free fungus gnat control Long-lasting top dressing.
Effective under dry or moist conditions and it is great indoors and outdoors. Unlike other top dresses that are limited to one phase of control, Gnat Nix! controls gnats at different points of their lifecycle. It prevents adult emergence from hatching larvae and deters females from laying eggs in the growing media.
As a result, the lifecycle of fungus gnats is interrupted, and its population significantly reduced.