My cats love the Whiskas stuff - but I only give it as treats. I would recommend feeding him something in between the Whiskas and the prescribed stuff. I've noticed that with the slightly more expensive food the cats have less hairballs and their poo smells... ummmm... less smelly. It does make a difference, and even on my tightest budget months, I always manage to buy the "better" food because my nose can't take the "output" from the Whiskas on a fulltime basis. Though the kitties would think they were in heaven to eat it fulltime.