HorseBadoritz
Well-Known Member
I had a gnat infestation that was growing and I started treating with Gnatrol which has a bacteria that kills the larva. I kept spraying the soil surface with essential oils to kill any crawling or flying gnats. Re-treated once a week for two weeks to get any new larva. The result is no more gnats.
Hay TT, the active ingredient is Bacillus thuringiensis israelensis (Bti). Same thing is in the dunks. I've got lava rock or hydroton as a top cover, so it's been a bitch to try and work the crumbs into the soil.
Apparently they've stopped selling pre-mixed Gnatrol, and only do a water soluable crystal now. Is that what you're using?
I just ordered some off Amazon