Primal Mixes are produced using only the freshest, 100% human-grade ingredients. Our poultry, meat and game are antibiotic and steroid free without added hormones. We incorporate certified organic produce for additional fiber and food-based vitamins and minerals. Primal Mixes are for supplemental feeding only and are designed for those pet owners who prefer to tailor their pets' individual supplemental needs. All Primal Mixes contain fresh ground bone for calcium supplementation.