NaturVet Naturals Hairball Plus Catnip Soft Chews for Cats is recommended to help eliminate and prevent hairballs. Psyllium is the key ingredient in helping with hairballs while flaxseed and fish oil help maintain a healthy skin and coat. Hairball Plus Catnip Soft Chews for Cats are made in the USA and has received the National Animal Supplement Council "NASC" Seal of Quality. 100% Money Back Guarantee!