Purina Tidy Cats Breeze Cat Litter Box System Starter KitCategory: Pearl Litter BoxHow It Works. Instead of traditional clay litter, the BREEZE(R) Litter System uses specially designed, cat-friendly litter pellets that are 99.6% dust free and anti-tracking. The pellets allow urine to pass through, while leaving solid waste on top for quick, easy removal. The urine is quickly absorbed by the odor-controlling pad.<br> <br>Litter System Contains: 1 Litter Box With Scoop 20.3 x 15.2 x 11.8 in. (51.7cm x 38.7cm x 30.1cm), 1 Bag of Litter Pellets 56 oz. (3.5 lb) 1.59kg, 4 Cat Pads 16.9 x11.4 in. (43 x 29cm).<br> <br>Litter pellets and cat pad refills also sold separately.