Store food in a cool, dry area. Temperatures should not be below 50 degrees Fahrenheit (10 degrees Celsius) or above 90 degrees Fahrenheit (32 degrees Celsius). We recommend not freezing canned product. Once the can is opened it should be covered in the refrigerator and the food fed within five to seven days. Hill’s™ Prescription Diet™ Canine a/d™ should be covered refrigerated for no longer than 36 hours.