If you go to
www.naturapet.com and they have a search engine that will locate a supply store near you. The Innova Evo really is the highest quality pet food I have seen on the market, but I like thier Senior dogfood formula as well. If you can afford it (thank god yorkies are little!) definately go this route. Science diet, Pro Pac, Nutro (what I use and like the best of these listed), Iaams, are crap compared to this brand.
Best of luck