Clenz-A-Dent PlaqueOff Food Additive, 40 gm is a palatable powder made with Ascophyllum nodosum seaweed that is sprinkled over your pet's food. The main ingredient in Clenz-A-Dent Food Additive has the natural ability to inhibit the formation of plaque, tartar, and calculus on the teeth and gums of dogs and cats.