ProDen DentalCare® Powder is VOHC accepted for both plaque and tartar control. The clinically proven kelp ingredient, A.N. ProDen® helps fight plaque and tartar, supports healthy teeth and gums and freshens breath. Palatable, low in calories, allergy friendly and can be added to any diet (wet or dry). For daily use to help maintain clean teeth. Continues to work after ingested. Jar is designed for multiple dog households. Lasts about 6 months for an extra large dog when used as recommended.