[Stosh]

I would try a small bag of Orijen first and see how it goes, mix it in slowly with the old food. Ask if there's a return policy if he doesn't like it, but I've never heard of a dog that didn't like the taste. I feed Nature's Variety and it's preservative-free so I don't buy huge bags of it so it's always fresh. I figure the few extra dollars per bag is worth it. Good luck!!