Having a cat with an allergy to fleas is very sad. He would swell up, and break out all over, besides the flea bites. I tried the flea collars for my cat and that made him sick. My vet suggested Comfortis for my cat. I would grind up the pill and mix it with butter and stick that in his mouth. If he gave me a hard time, I would wipe the pill/butter mixture on his front legs. He would lick it up and end up taking it while he cleaned himself.
I have tried other expensive brands with the drops, it helped a lot but didn't do as good as the Comfortis. He is now a very happy cat.
