My cat has a urinary tract problem. He is 11. Some blood in urine but no stones anymore has been on medicine. Now trying new foods. I wish pet food companies that make prescription diets would make their canned cat food a lot more cat friendly. Science diet is like mud and gets hard. Royal feline control is dark and gluey. It kills me how they say not to feed the dry but when it comes to the urinary food thats all he'll eat. Not the canned. I hope pet food companies try a little harder so the cat will eat the canned instead of the dry. Used S/D canned for a day then now use royal canine control dry (he will not eat the canned)