Treating and Preventing Fleas on Cats
New Methods of Flea Control continued...
Advantage (imidacloprid) is a once-a-month topical liquid that kills fleas
by direct contact.
Following application, 98 to 100 percent of adult fleas are killed within 12
hours. Thus, any new fleas that infest the cat should be killed before they
have a chance to lay eggs. This breaks the flea life cycle and eventually
eliminates fleas in the environment. Advantage is not absorbed into the cat’s
system, and therefore is nontoxic. Humans do not absorb the chemical after
petting a treated cat. Advantage can be used on kittens 8 weeks and up.
Frontline and Frontline Spray contain the active ingredient fipronil, which
kills fleas on contact within 24 to 48 hours. The fleas do not need to bite the
cat to be killed. Frontline is a topical liquid that comes in tubes and is
applied as described for Advantage.
Frontline Plus has S-methoprene, which is labeled to kill adult fleas, flea
eggs, and larvae. It also treats chewing lice and is used as part of a program
to control sarcoptic mange. Frontline Plus is
labeled for kittens 8 weeks of age and up.
Revolution (selamectin), a heartworm preventive, is a once-a-month topical
liquid that is applied to the skin of the cat’s neck between the shoulder
blades, as described for Advantage. It also controls adult fleas and prevents
flea eggs from hatching. Selamectin can also be used to control ear
mites, roundworms, and hookworms, as well as some ticks.