Calibra Cat Expert Nutrition Sterilised Chicken 7KgComplete dry food for sterilized or castrated adult cats Calibra Cat Sterilised is a hypoallergenic dry food designed primarily for neutered adult cats. The food? s low mineral content reduces struvite formation and maintains a healthy urinary tract. This complete superpremium food with a high chicken content and a low grain content is suitable for very finicky cats as well as cats with sensitive digestive systems.