NO, no, no, never use something that is for a dog on a cat or visa versus. Go and buy one for the cat. But really the best thing is to buy the monthly flea tubes, it is a lot less hassle. That vet tech doesn't know what she is saying, she is completely wrong on that. I would tell your veterinarian, what this vet tech said, she doesn't need to be working there at all.
**Something very important that I forgot to tell you, it goes by weight. Too much or too little is not good enought. To little will not do anything, too much it can kill your cat***********