They look innocent enough, don't they? However, they seem to be following their own version of Robert Herrick: Scatter ye flea eggs while ye may!
A week following application of Frontline on all three cats, all are scratching like nobody's business, and leaving behind flea eggs and dirt. And I know a flea egg when I see one—or rather, when I see one, I see hundreds. A call to the vet's office, who once a month knows that $50+ is coming her way for three vials, brought this response.
"We've had lots of complaints that Frontline doesn't seem to be working this summer."
Well, should I switch over to something else??? hmm??
"Well, lots of people are switching to Advantage."
Could the fleas have built up a tolerance/become resistant to these medications??? That didn't seem to have occurred to anyone there at the vet's office.
How is Advantage? How about something else, called Revolution, that a friend's vet seems to swear by?
From PetMed's Web site:
Frontline Plus contains fipronil, a broad-spectrum insecticide and slow-acting poison that disrupts the central nervous system of fleas and ticks and S-Methoprene, an insect growth regulator that kills flea eggs and larvae.
The active ingredients are stored in the sebaceous glands and are wicked out of the hair follicles and continuously re-applied to the coat for long-lasting, waterproof protection.
The active ingredient [in Advantage] is imidacloprid, which acts on the nervous system of the flea to cause paralysis and subsequent death. Within 12 hours of application, 98-100 percent of fleas are dead. Advantage kills fleas before they lay eggs, so their life cycle is broken at multiple stages. It also kills flea larvae within 20 minutes of contact.
Revolution works by penetrating the skin and entering your pet's bloodstream. Concentrations of selamectin, the active ingredient, in the tissue and bloodstream prevent heartworm disease. Selamectin also redistributes into the skin from the bloodstream and kills adult fleas, American dog ticks, and ear mites, and prevents flea eggs from hatching. Its also an antihelminthic, which means it fights to expel parasitic worms. Parasites ingest the drug when they feed on the animal's blood.