Quote Originally Posted by pfunk211
if sand doesn't cut them off, soil drench with water that's had a mosquito dunk marinating every three days. two gnats become three million pretty quickly.
or, crush up Dunks [don't breathe the dust] and put 1/4 teaspon on the top of the soil in every pot in the building. It's a biological, so it won't hurt anything but those fkn gnats. Yellow sticky traps to keep tabs on progress... it takes a couple weeks because you are only killing the larvae.

Mine came in Roots Organic.... sigh:cursing: