I had a HORRIBLE problem with fungus gnats when I started my seedlings inside. It was disgusting. I started my seedlings under lights, and had closed the area off with plastic, so they didn't get in the rest of the house, but it was still HORRIBLE! I was told that fly strips are the best way to get rid of the adults, but you still have to treat the soil. I bought a spray for fungus gnats, and that did get rid of them right away. Sorry, but I used the bottle up and no longer have it, so I don't know which brand it was. I sprayed the soil really well with it, and didn't lose any seedlings. Several people told me that putting up those sticky fly strips are the best way to get rid of the problem to begin with. If I ever get up the nerve to start seedlings inside again, the first thing I'll do is hang sticky fly strips up! I found them at the dollar store and Home Depot for 5 strips for a dollar. That sure was cheaper than the spray I bought!
