Just be careful and observant if you start using Advantage or Frontline or whatever on your cat. The stuff is basically poison, and cats seem more sensitive to that stuff than dogs. I have a couple relatives with cats that cannot tolerate those treatments without getting very sick (one teetered on the brink of death… and correct dosages were administered).

Best way I know to test the waters is by using smaller doses for the first month(s), like quarter- or half-doses, at first to make sure the animal won’t have a reaction. Most people that have tried this report that even a half-dose keeps the fleas off for a full month. Only move up to a full dose if the animal shows no adverse reaction.