My vet for nearly 30 years, who has since retired, recommended Purina Cat Chow and I've stayed w/that w/no problems whatsoever. And now my new vet has recommended all Purina products. Some people may disagree and perhaps for their cats this isn't the brand to use but my cats all love it and have had no problems, so I stick w/what they'll eat and w/what works. I don't give them canned food. They love it but none of them can seem to keep it down. They have a water fountain that they adore and they stay well hydrated. Hope this helps.