To all commenting on urinary issues and feeding dry.
Have you done your own research? It all points to wet food diets being best not only for cats with urinary issues, but also for all cats.
Another thing to consider when you have a cat with urinary issues: Make sure a full spin test of the urine is done, not just a litmus paper dip. Get a copy of the urinalysis, read it & research the results and then research foods to find a good one for your particular results.