Since the problem SEEMS to have been in the rice, I am now feeding raw in kibble form, which has NO grain whatsoever.

I mean...have you ever seen cats grazing in the wild? Chewing their cud?

My two still get Royal Canin Urinary as a half-and-half mix(the RC has rice and corn). Oscar had a UTI last year, so we are testing his urine after a month on the mix. If it's ok, we'll test it again after a month of full raw kibble.

If he's clear still, then he and his bro will be on the raw kibble.

If either of them develop kidney issues as they get older, that will change too, as the food is pretty much all protein.

But boy - are they perkier since starting it! Especially the "old" guy Oscar!