Quote Originally Posted by Logan View Post
But, if I'm not mistaken, there is a major ingredient difference in the topical flea meds given to dogs versus cats and the dog meds include something that could be toxic to cats. I'm sorry I don't remember the specifics, but I would not risk using a dog flea treatment on my cats.
Yes - I've read that too, but since I don't have any cats, it was something that was never an issue for me. There are warnings not to use on cats since there is an ingredient that cats cannot metabolize, tho I don't know what it is. I didn't mention it earlier in this thread, since there are folks that use the dog med on their cats, and with no adverse reactions.