Debbie, I has those kinds of problems with my RB Tony and I have also been through those kinds of problems with Smokey. For some reason some male cats tend to be more prone to those types of problems and some never have a problem....for instance Abner has never had a problem.

You do want to stay away from foods that are high in ash content. It is a simple as reading the label.

I tried all the Science Diet and Hills Prescription Diet food for Smokey and none of them helped him with his problems. He ended up with surgery to rectify the problem.