How long does it take for Advantix to work on dogs? How long does it take for K9 Advantix® II to work on fleas? K9 Advantix® II kills fleas on dogs within 12 hours of application. It kills re-infesting fleas from the surroundings within 2 hours and protects against further reinfestation for at least four weeks.
How effective is Advantix for dogs? Overall Effectiveness:
With happy, lifelong customers and a thriving place on the market, this product works well. Within 12 hours, you should see your dog stop scratching, as all ticks and fleas should be dead by that time.
Will K9 Advantix kill existing fleas? K9 Advantix II is the newer version of K9 Advantix. Both versions are effective, but while the original K9 Advantix will kill fleas, it won’t do anything about the eggs that they may have produced before the insecticide application. Advantix II prevents fleas from maturing, therefore preventing them from laying eggs.
How long after applying Advantix can I bathe my dog? As a general rule of thumb, when applying any spot-on, topical, or at times even oral medication to your pet, it is best to wait at least 48 hours before bathing. In the case of flea and tick prevention, this allows the product to begin working effectively.