Katladyd - I chose this food from some listed in a thread posted here earlier. The Innova was being fed to a kitty who I think had had PU surgery (will have to go reread the thread), and he is doing just fine.

It was about 4 years ago that Oscar had a really bad UTI. The amount of crystals was almost neglible...a week on the proper food fixed that.

However, he had blood in his urine for a month, poor baby.

The vet diagnosed idiopathic cystitis - it was caused by stress. He had been feral, then tamed, then I brought him home...and then a new kitty arrived. They got along fine, but even good stress is stress!

Vet wanted him on meds - thanks to PT I had heard about Feliway and asked to try that first. That was the vet's main concern. Oscar now wears a very stretchy collar and gets a shot of Feliway into the collar once a day. My vet loves the Feliway Collar idea, BTW!

He's been just fine. The two still get Royal Canin wet kd every morning.

I will check with my vet...but I also want to keep their weight and health good.