Advantage Aqua Medium For Dogs 8.8-22 lbs (4-10kg) - No Rx requiredAdvantage Aqua Medium For Dogs (4 Pack) Flea prevention and flea and biting lice treatment Kills fleas and biting lice on dogs One treatment prevents further flea infestation for four weeks Can use as a part of a treatment strategy for the control of allergy dernatitis Dog Size : below 8. 8 lbs & over 22 lbs (4 10kg) Method of Administration : Topical. Part the hair on the back of the neck at the base of the cats skull until the skin is visible. Place