A young kitten showed up in our backyard last week and we brought her inside. She's living in out spare bedroom until we figure out if we want to keep her or adopt her out.
We took her to the vet last week and the vet found one lone flea on her. I have some outdated kitten Revolution. Can I use that on her with no ill effects? Don't want to buy new if I can avoid it, especially if we don't keep her.