Make sure your puppy's dry food stays fresh and tasty with these easy storage ideas. Always put the food in a container that seals tightly to keep out moisture and air, which can make the food go bad or lose its nutrients. Keep the container in a cool, dry place, away from bright sunlight, to keep the food in good condition. Don't leave the food in its original bag unless the bag can be sealed tightly—move it to a special pet food container for better protection.