It's funny. After doing all my research on what to feed Sunny (puppy), I realized I never did any of that with my cats. I just fed them "grocery store food". I guess I have become a more responsible pet owner since joining PT and now think of these things. Moon and Bean have always eaten purina one urinary tract formula dry food and wet food and Bean gets fancy feast too. Moon had a problem with urinary blockage when he was around 2 and I had a male cat years ago with that same problem so I just automatically started Bean on it and he's never had any problem with blockage. They love it and are doing well on it so I'm not going to switch them now although I do find myself wondering if I should switch them to the higher quality foods now that I know about them.