$21.68 $21.68 View... Advantage Purple Cats Over 8.8lbs (4kg) - 4 Pack $29.38 $29.38 View... Advocate Cats Over 8.8lbs (4kg) - 3 Pack $27.28 $27.28 View... Advocate Cats Under 8.8lbs (4kg) - 3 Pack $50.39 $50.39 View... Advocate Cats Over 8.8lbs (4kg) - 6 Pack $51.79 $51.79 View... Advocate Cats Under 8.8lbs (4kg) - 6 Pack $23.08 $23.08 View... Advantage Blue Dogs Over 55lbs (25kg) - 4 Pack $37.79 $37.79 View... Advocate Dogs Over 55lbs (25kg) - 3 Pack $68.60 $68.60 View... Advocate Dogs Over 55lbs (25kg) - 6 Pack $22.38 $22.38 View... Advantage Red Dogs 22-55lbs (10-25kg) - 4 Pack $31.48 $31.48 View... Advantix Dogs Over 55lbs (25kg) - 4 Pack $31.48 $31.48 View... Advantix Dogs 22-55lbs (10-25kg) - 4 Pack $35.68 $35.68 View... Advocate Dogs 22-55lbs (10-25kg) - 3 Pack $58.10 $58.10 View... Advocate Dogs 22-55lbs (10-25kg) - 6 Pack $42.69 $42.69 View... Revolution Teal Dogs 44-88lbs (20-40kg) - 3 Pack $22.38 $22.38 View... Advantage Aqua Dogs 8.8-22lbs (4-10kg) - 4 Pack $28.68 $28.68 View... Advantix Dogs 8.8-22lbs (4-10kg) - 4 Pack $31.48 $31.48 View... Advocate Dogs 8.8-22lbs (4-10kg) - 3 Pack $51.79 $51.79 View... Advocate Dogs 8.8-22lbs (4-10kg) - 6 Pack