Advantage is provides the fastest flea control, going to work within minutes to combat fleas. Advantage stops biting fleas in three to five minutes and begins killing adult fleas within an hour following application. Imidacloprid, the active ingredient in Advantage, kills 98-100% of adult fleas within 12 hours of application.

Fast flea control is important because for many cats, even one flea bite can cause Flea Allergy Dermatitis (FAD), a very uncomfortable and irritating skin condition for cats. Quickly stopping flea bites provides major relief to cats with FAD.

Advantage breaks the flea's life cycle by killing the adults before they lay eggs. It also kills flea larvae within 2- minutes of contact. With regular use of Advantage, your cat won't need any other flea control products.