Top your dog's kibble with raw. Instinct Raw Boost Mixers Gut Health provides fiber and live, natural probiotics to help maintain digestive health. Cage-free chicken is combined with vibrant, functional, whole-food ingredients - 100% freeze-dried and bursting with flavor and nutrition. Raw, whole-food ingredients are freeze-dried to gently remove the moisture, while locking in nutrients and flavor. Raw Boost Mixers are made in the USA with the finest ingredients from around the world. They are made without grain, corn, wheat, soy, potato, artificial flavors or preservatives.