Has anyone given Comfortis to their Yorkies for flea control? It is a chewable tablet instead of Frontline, etc. Brady's breeder said it is not safe for small dogs and she thought it was taken off the market. I wasn't using anything on Brady because I don't like chemicals but then I saw a few fleas on him and started using the Frontline. The problem with that is that the fleas have to bite first which bothers me because, the dog may be allergic to the bites