Advantage II for Cats is a topical flea control solution that is fragrance-free and conveniently dosed into individual tubes. This product should be applied to your cat once per month and will kill fleas through contact, meaning that fleas do not have to bite your cat to be killed! Advantage II kills fleas, flea larvae, and flea eggs. Remember: if your cat has fleas, so does your home. If you are treating your cat for an active flea infestation, please take steps to also treat your environment. Vacuum your home thoroughly, wash and dry bedding, rugs, and clothes on the hottest settings, and use environmental flea control products to eradicate the issue.