The natural chewing process removes plaque and tartar buildup and the activated charcoal adds extra cleaning power, freshens breath, and whitens teeth. Cheese-Char is made with the same Himalayan recipe providing your pup with savory cheesy goodness, with no medicinal smell or taste. These dental chews are all-natural, lactose, grain, soy, corn, and gluten free, with no preservatives or binding agents. Feed 2 hours before or after any meal.