I'm reading quite a number of reviews from people who swear by this food because their vet recommends it. I work for a vet and like others have mentioned, the doctors get kickbacks from the Hills for promoting and selling their crappy food. To make it worse some of those prescription formulas are like fifty bucks for a twenty pound bag and the main ingredients are corn and by product meal. I never recommend Science Diet to any of our clients even though I could get in trouble for doing so. There are many food on the market that are of much better quality for the same price.