Every time I hear the Pestrol radio commercial with it's "natural Tasmanian Pyrethrins" and "Completely safe for pets" I wonder how they get away with false and misleading advertising and how many reptile keepers know that Pyrethrins while safe for dogs, cats and birds are lethal for snakes whether inhaled or by skin contact. From their web site: "It's Safe" "Pyrethrum is derived from the Chrysanthemum daisy flower, which is harvested in Tasmania. It is completely safe for people and pets. Completely biodegradable. Ozone safe."