NOT recommended for cat with CKD
I have two cats, one now very arthritic, one with early kidney failure. The tray is intended for the first, but of course the second also takes advantage of it. She pees a lot because of the kidney failure, and this litter was quickly overwhelmed, turned to wet, sticky clay, and was nearly impossible to remove from the tray. Back to the wood fibre, which may get sodden but is much, much easier and cleaner to dispose of!