I bought some Frontline spray for my cat stinkie. Some of you may have already read about his allergy to fleas and the problems that he has with it. I have never sprayed him with anything before. I am concerned about what will happen if he washes himself after I spray him with it. The vet told me that the spray would be better than those tubes because it is less expensive and I would be able to spray all of my cats without having to buy another bottle. So, since I don't have much money, I bought the spray. Is it okay to use that instead of something else? I am really worried about him washing himself and getting it in his mouth. I couldn't bear for him to sick. What should I do?