I'm so glad you asked about it and didn't just assume it was a behavior problem. You'll have to keep an eye on him because neutered males can sometimes develop problems where they are always getting "crystals." I'm not too familiar with this, but Fister and Boots have had quite the ordeals with it. I'll try and find those threads for you to read, just in case this develops into more than just a simple UTI.

Good luck with the "biotics" as Boots called them. And let us know how Bailey is doing.