Stronghold Plus Sort By Default Title - A to Z Title - Z to A Price - lowest first Price - highest first Time Added - latest first Popularity - most popular first Sales - best selling first View... $30.95 $37.50 Stronghold Plus for Large Cats 11 lbs to 22 lbs (5kg to 10 kg) - 3 Pack View... $30.95 $37.50 Stronghold Plus for Medium Cats 5.5 lbs to 11 lbs (2.5 kg to 5 kg) - 3 pack View... $29.95 $36.30 Stronghold Plus for Small Cats less than 5.5 lbs (2.5 kg.) - 3 pack