In outdoor pest control, it's best to act fast ... Guerrera sprinkles cinnamon on the soil to naturally kill fungus gnat larvae. “Neem oil is another great option that stops gnats from breeding ...

Fungus gnats thrive in moist environments, so one of the simplest ways to control them is to allow the top 1-2 inches of soil ...

Adult fungus gnats don't do much damage, but can help to spread diseases such as damping off. However their larvae eat the delicate roots of seedlings, cuttings and house plants and bite young stems ...