$20.57 $20.57 View... Advantage Purple Cats Over 8.8lbs (4kg) - 4 Pack $27.88 $27.88 View... Advocate Cats Over 8.8lbs (4kg) - 3 Pack $25.89 $25.89 View... Advocate Cats Under 8.8lbs (4kg) - 3 Pack $47.82 $47.82 View... Advocate Cats Over 8.8lbs (4kg) - 6 Pack $49.15 $49.15 View... Advocate Cats Under 8.8lbs (4kg) - 6 Pack $21.90 $21.90 View... Advantage Blue Dogs Over 55lbs (25kg) - 4 Pack $35.86 $35.86 View... Advocate Dogs Over 55lbs (25kg) - 3 Pack $65.11 $65.11 View... Advocate Dogs Over 55lbs (25kg) - 6 Pack $21.24 $21.24 View... Advantage Red Dogs 22-55lbs (10-25kg) - 4 Pack $29.88 $29.88 View... Advantix Dogs Over 55lbs (25kg) - 4 Pack $29.88 $29.88 View... Advantix Dogs 22-55lbs (10-25kg) - 4 Pack $33.87 $33.87 View... Advocate Dogs 22-55lbs (10-25kg) - 3 Pack $55.14 $55.14 View... Advocate Dogs 22-55lbs (10-25kg) - 6 Pack $40.51 $40.51 View... Revolution Teal Dogs 44-88lbs (20-40kg) - 3 Pack $21.24 $21.24 View... Advantage Aqua Dogs 8.8-22lbs (4-10kg) - 4 Pack $27.22 $27.22 View... Advantix Dogs 8.8-22lbs (4-10kg) - 4 Pack $29.88 $29.88 View... Advocate Dogs 8.8-22lbs (4-10kg) - 3 Pack $49.15 $49.15 View... Advocate Dogs 8.8-22lbs (4-10kg) - 6 Pack