FUNGUS GNATS

I find anytime have gnats a topping of Nematodes works best for me. They live in the soil and eat the larva then the adults die for getting caught in fans or flying into the light. I use a brand called Nemaglobe pod poppers DE or diatomaceous earth is a good option but it can be a respiratory irritant if mishandled. Plus when it gets wet it is said to be ineffective. So best to always use it dry. It does not kill on contact from my understating of it. but it does cut the bugs exoskeltion "skin" and makes they "bleed out" or evaporate all their internal liquids and then die. Its akin to walking or rolling on glass and the wounds not healing. You will loose a lot of blood and pass-out with enough cuts. BTi is also another good option for controlling them. Good Luck!