My cats have fleas, and I've tried the liquid meds, but one cat is severely allergic to them, and grooms the other cats, so I can't use them. They give her convulsions. Two of the cats have very thick fur, also, and it's hard to get the meds all the way down to their skin. Collars have not worked, and neither has powder. I know for dogs, there's an injection they can get, and also a tablet that lasts a month. Is there anything out there like that for cats?
You can try program, this is a pill. vetcare