Zinc salts are derived from Zinc, a naturally occurring mineral. Zinc Salts are considered anti dental plaque substances. They act upon bacterial plaque, eliminating the microorganisms that cause it and inhibit the formation of the plaque’s matrix. In Divine Pets mouth wash products, Zinc salts help prevent tartar buildup by preventing plaque from forming hard deposits (calcifying) on the pet’s teeth. Zinc salts also help prevent gingivitis by inhibiting the accumulation of bacteria on the pet’s teeth and gums.