A.There are commercially available prescription diets that address this condition but I typically like to stay away from them because of quality issues with their ingredients. Although it could entail more work, I prefer home derived diets. The top of my list are raw diets consisting of 70% to 80% meats, crushed bone and the rest veggies. This work very well. Under that would be home cooked meals. There are several ways to go with this; a good reference would be the Home-Prepared Dog and Cat Diets: The Healthful Alternatives by Donald R. Strombeck, DVM, PhD. For supplementation, I would use UT Strength by Vetri-Science Labs, CoQ10, a cranberry extract supplement, and the homeopathic Uri-Cleanse by BHI or Urinary Aid by Professional Complementary Health Formulas.