Tidy Cats Breeze Refill Cat Pads/h2>It's ingenious. Tidy Cats Breeze Refill Cat Pads are easy to maintain and odor free. The specially-designed Breeze Litter Pellets allow urine to pass through to the Breeze Cat Pad underneath, while leaving solid waste on top for quick, easy removal. Urine is quickly absorbed by an odor-controlling Breeze Cat Pad in a protective tray. For use with Tidy Cats Breeze Litter Box System, sold separately.