VOHC is an international organization of board certified veterinary dental specialists, formed by the American Veterinary Dental College and endorsed by the Academy of Veterinary Dentistry and American Veterinary Dental Society. VOHC evaluates the effectiveness of veterinary oral care products similar to how the American Dental Association (ADA), measures the efficacy of human products. Products that carry the VOHC Seal of Acceptance have demonstrated via clinical testing that they successfully meet strict criteria for effectiveness in controlling plaque and/or tartar accumulation in dogs.