dirkdaddy
Member
im tellin y'all for 19.99 you can have peace of mind about these things. the beneficial nematodes hunt down these gnats. I had a horrible infestation a few months ago. infected my main batch of soil, seedlings, everything. they sucked, were everywhere, and most of the so-called solutions I used on this website did jack (soap on top of soil, top dress with perlite, let your medium dry out, etc). the nematodes worked within days and I have seen maybe a single gnat since then. one box of nematodes goes a long way as well. just use it whenever you mix up your soil or break open your bag.