Hmmmm, I was always under the impression that the canned food was the cause of urinary problems due to the magnesium content. I have been feeding him Wellness canned food since I've had him and he likes it, and he does eat the prescription dry food OK. I've been feeding my cats mostly dry food with a spoonful of wet food each day. I should probably increase the wet and reduce the dry then.
I should probably ask my vet's opinion as well just to be sure, before I put him back on any of the food I was feeding him previously.
Thanks for the information.