Originally Posted by Quiet
Don't use the frontline plus for dogs on a cat. I think you are thinking of the regular old advantage, that is the only one you can dose out for a cat. Not the advantage plus just straight old plain advantage but you have to have the tiny syinges to measure it and the unused part will evaporate. It is just much easier to get the product that is labeled and made for cats.
Frontline Plus and Advantage II are both OK for cats (if dosed properly). The "plus" and "II" part is just an IGR and cats actually need a higher dose of that than dogs do so that amount isn't dangerous. It's also safe to split Revolution, but since it comes in different strengths you have to be more careful in dosing, plus since you need a prescription, most vets don't like to write a prescription for off-label use.
But NO OTHER products should be used like this!!!! Not Advantix or Advantage Multi or any other dog product. You have to be super careful to get the right thing because most dog flea products will kill cats. ONLY Frontline (Plus), Advantage (II), and Revolution can be used this way.