Has anyone ever switched a cat proned to UTI's over to Evo? Any changes? Success? My youngest cat, Sam, is plagued with UTI's and I'm wondering if I should switch him to Evo. I absolutely abhor the idea of feeding him the prescription diet at the vet, so I'm researching options. I've heard great things about EVO helping with this particular problem, and I figure if it's true, I'll place my order today and see how it goes. Just wanted to hear some feedback first.