Oops, I should have looked at the stuff before posting. THURICIDE is Bacillus thuringiensis KURSTAKI. I also note, I actually used a Safer brand product called Caterpillar Killer (with the same BtK in it). The kind of fungus gnats I had, spend part of their life as a worm in the soil eating things like plant roots. Alberto reminded me that changing your soil (such as removing peat moss) or other container culture practices so you do not have wet stagnant conditions in your media may be a better approach (for various reasons) than treating a symptom. I think the other BT I mentioned is for controlling something with a name equal or similar to Mosquito :-). KellyO On 28 Jan 2006 at 3:42, Kelly O'Neill wrote: > For me, > A liquid (possibly with a name like Thurigen) containing > something with a name something like Bacillis Thurigenisis var. > israeliensis :-) worked well. It takes some time, however, I think > it builds a colony of little critters that do the job very well if you > keep them happy enough. I just added it to their waterings a > few times (and watered it in lightly). My problem was in heated > greenhouse conditions. KellyO > > > Kelly O'Neill Wet Rock Gardens Flower Farm > U-Pick and more at the farm (open by appointment > November thru February): > 2877 N 19th Street > Springfield, Oregon 97477 > To contact us: * Business Office for mail or by appointment > only: > gardens@wetrock.com * 1950 Yolanda AVE > http://www.wetrock.com/ * Springfield, Oregon 97477 > (541) 746-4444 *