Well, all 3 cats are now infected. Who knows how they got that way, they don't have fleas (they were wormed once before we got them *supposedly*). I suppose they must have eaten a bug or something with a flea on it (do bugs get fleas?) I didn't see any signs of them before. Tiger has little rice-like pellets near his tail, and Jorin and Boo came up with them yesterday. I even found a live one coming out of Tiger. EEEEEWWWW! I called my vet and they said that OTC products were fine to use, just stay away from Hartz products. Anyone have any recommendations?