I have been using frontline from my vet on my pregnant cat who is l yr old. She is about to have kittens and still so many fleas, I am afraid the fleas will kill the kittens. What do I need to do and what is safe to use before and after she has the kittens???
I recommend that you use advantage instead. You can apply it every 2 weeks and it is safe on kittens 6 weeks old. vetcare.