Although you’ll be anxious to see the difference Pro Plan can make in your cat, please allow 7 - 10 days to ease the transition from your cat’s current food. Each day, simply feed a little less of the previous food and a little more Pro Plan until you’re feeding Pro Plan exclusively. This gradual transition will help avoid dietary upsets. Contains a source of live (viable) naturally occurring microorganisms. Provide adequate fresh water in a clean container daily. For your pet’s health, see your veterinarian regularly.