Purina One +Plus Indoor Advantage Dry Cat Food Turkey, Take care of your indoor cat with Purina ONE +Plus Indoor Advantage adult dry cat food. Developed for the needs of indoor cats, this weight management adult dry cat food starts with real turkey as the #1 ingredient. Each cup of Purina ONE Indoor Advantage adult dry cat food contains 37 grams of protein to help support her strong muscles, including her healthy heart. We formulate this dry cat food for weight control to help your cat maintain a healthy weight and add a natural fiber blend to the cat dry food to help minimize hairballs.