Advantage is a very effective flea control product made by Bayer and usually sold only through certified veterinarians. While more expensive than over-the-counter brands, Advantage works much, much better, bringing immediate relief and killing 98-100% of fleas within 12 hours of application.
I had purchased Advantage after all my attempts to rid my cats of fleas with over-the-counter stuff failed.
Advantage is sold in packs of 4 small tubes;
there are different versions available for smaller and bigger cats, and dogs. The vet gave me a detailed explanation of how to apply the product (clear, easy to follow directions were also enclosed in the package).
With a cat, you separate the fur on the back of the cat’s head and squeeze the product out of the tube onto the skin.
That’s it; the natural movements of the cat ...