Lots of things I'll never know.
I also saw this. My cat does not like rc or hills so I'm glad she likes purina ur. Her crystals are gone but she's still straining to pee
The main difference between UR and Royal Canin is that UR has less sodium, more protein, and can be used for weight loss. It comes in a Savory Selects version (gravy and chunks) that has the highest protein, lowest carbs and lowest fat in a urinary diet on the market.Apr 29, 2019