Advantage II Flea Spot Treatment for Dogs, 3-10 lbs by Advantage II $72.42 select a variant Up to 10 lbs - 6 Month - $72.42 Up to 10 lbs - 4 Month - $55.12 select a variant Up to 10 lbs - 6 Month Up to 10 lbs - 4 Month size 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Ingredients: Active Ingredients : Imidacloprid 9.10% , Pyriproxyfen 0.46%.