NaturVet's Natural Hairball Aid Gel with Catnip is a combination of natural herbs and oils which coat the digestive tract to help ingested hair pass through the intestines and prevent hairballs. Formulated with the appealing taste of catnip. Our formula is petrolatum free. Natural Hairball Aid Gel with Catnip is made in the USA and has received the National Animal Supplement Council NASC Seal of Quality. 100% Money Back Guarantee!