Hi all, i use pings as a gnat killer. The best one i find is Ping x weser. as Kip said its the easest to grow and propargate. heres a link to some of the pings i grow.I just place a few "wesers" around in my seedling house and it helps to keep them under control. I also use yellow sticky paper as well. http://public.fotki.com/savagegardenz/… Kiyel Boland kyle.b1@xtra.co.nz http://www.savagegardenz.co.nz/ http://public.fotki.com/savagegardenz/