Frontline for dogs can be used on cats. I use it on my Dad's cat.

Sorry, I don't know about Revolution. I had a bad experience with it years ago when I first adopted Scout. My vet gave her a dose of Revolution and it made her hair fall out and her skin got red and irritated. We thought it was ringworm and I had to spend a fortune having tests and a skin culture done just to be told it wasn't ringworm but a reaction to the Revolution.