- Mar 17, 2017
So Phoenix has crystals in his urine. This is my third cat to have UTI issues. The vet started him on prescription Royal Canin while he was in the hospital. In the past for other cats Science Diet has been what was recommended. The cost is nearly the same and ingredients look pretty similar. I just know Science Diet works and have no experience with Royal Canin. Does it work as good as Science Diet?