On Wed, 24 Oct 2001 Shantihhh@aol.com wrote: > I suspect this is not natural/organic and not available in California. LOL > Very few chemicals are left on the shelves here. Imidacloprid is the active ingredient in the flea-stopper Advantage; it's a nicotine-like chemical that blocks acetycholine receptors. It's a General Use Pesticide, toxicity class II or III depending on the formulation. http://ace.ace.orst.edu/info/extoxnet/pips/imidaclo.htm