Prozym RF2 sticks contain una exclusive patented resource, RF2. This prevents bacteria from forming biofilms, the first essential step in the formation of dental plaque. Prozym RF2 sticks therefore prevent the appearance of dental plaque and tartar and effectively combat bad breath. The unique consistency and ergonomic "star" shape of Prozym RF2 sticks ensure a tempo prolonged chewing, which helps combat the improved vegan formula is ideal for dogs with kidney, heart or allergy problems.