Another non-toxic method for fungus gnat control is using yellow
"sticky" trap cards. The adults are attracted to the yellow and stick
so they never get a chance to lay eggs in your soil. For an existing
infestation, this means as soon as they hatch, they fly right to the
card. Two weeks (changing cards once) completely rid a 10 inch pot of
Sandy Connerley wrote:
>I tried plain horticultural sand when I had the problem, but never
>thought of mixing pyrethrum with it. Great idea.
>As I recall, I did try the drenches with Bt as well. I was stupid of me
>to bring it inside in the first place. Prevention is a hard learned
>lesson not to mention time and expense.