Protects against plaque and tartar build up for healthier gums and fights dogggy breath. 99% odour, taste, and colour FREE, even the pickiest dog will enjoy their water. Contains Glucose Oxidase, an enzyme that is scientifically proven to react with glucose, forming powerful cleaning and anti-bacterial agent. It simply keeps the teeth clean. Eco-friendly to ship, contains 8 blocks weight 40g and last up to 1 month.