i was wondering what are the bad ingrediants used in flea collars. are kitten flea collars ok? are there any allergic reactions to look out for? as you may have already guessed, i have a flea prioblem. i have tried flea spray, but the fleas come back the next day, i gust thought that a flea collar may be a more permanent way to keep my babies from the fleas. help... jon-anne Bartok the avenger and Big, the claw. [Posted in FML issue 0977]