Kills fleas and ticks for up to 30 days. Kills fleas which may cause flea allergy dernatitis. Kills brown dog ticks, American dog ticks, lone star ticks, and deer ticks for up to 30 days. Kills ticks that may transmit Lyme disease, Rocky Mountain spotted fever, ehrlichiosis, babesiosis, anaplasmosis, and haemobartonellosis. Can be used on puppies and kittens eight weeks of age or older. Not Available in NY or CA