Royal Canin Indoor Adult 27 Is Made For Cats 1-10 Years Old. Indoor cats are less active and Royal Canin has made this formula for cats that spend more of their time grooming and sleeping. Smaller feces and less odor will result from feeding Indoor Adult. Formula reduces tartar and hairballs. Chicken meal and brown rice based. 325 kcal/cup. Crude Protein not less than 27%, Crude Fat not less than 12%, Crude Fiber not more than 6.2%, Moisture not more than 8%. 3 Lb.