My cats are on Evo and doing better then they ever have. About the tarter build up.... Before switching to mostly Evo, my cats were on pretty much all dry and still had some tarter build up. Peaches had quite a bit, actually. So I'm not convinced dry food is all that when it comes to tarter. I still feed some dry. But mostly they get the can Evo. You can get Evo dry too, which I imagine is what you originally were thinking of.