It's been years since I had kittens. I think there is a powder that you can use on kittens. We used to use a baby shampoo on the kittens, towel them dry with an old towel, and kill the fleas manually. Sounds gross, but it avoids the use of dangerous chemicals on kittens. You could put the flea spray on the old towel to kill the fleas. I wouldn't use the towel on the kits after that.

Do you have a good vet? Perhaps he or she would have an answer.

I would definitely wait for advice from the veterans here before taking my advice.

Anne

PS gee, two others posted while I was writing my response. I didn't know about kitten revolution.