To use this salmon oil supplement, simply add the recommended amount to your pet's food. The amount depends on your pet's size, so check the label for the right quantity. It's best to give it with meals for better absorption. Keep the bottle tightly closed and store it in a cool, dry place away from direct sunlight. If your pet has any known health issues or is on other medications, it's a good idea to consult your vet before starting this supplement. There's no special maintenance needed for the product itself, but always make sure to check the expiration date and discard the bottle if it has passed.