Advance contains a unique blend of minerals which have been clinically proven to increase the level of antioxidants in your pet which helps strengthen the immune system. Enhanced levels of zinc and linoleic acid which help improve skin and coat conditions. Yucca Extract reduces litter box odours. Active Ingredients help reduce the frequency of hairballs and their symptoms. These fibres sources aid in moving ingested hair gently through the intestinal tract. Controlled levels of minerals help maintain a healthy urinary tract. Advance is specifically designed to promote dental health. Dry food has been clinically proven to reduce tartar build-up through mechanical abrasion.