This open cat litter tray has removable litter guard to prevent litter from spreading outside. The grid bottom (inner sieve box) acts as a sieve to reduce urine odor and dust. You can place a training pad in the bottom layer to collect urine and dust for easy cleaning. The bottom tray is low to the ground and it is easy for kittens and old cats to climb in. Good for messy cats who like to scratch but do not like enclosed cat litter box. Also good for non-clumping cat litter that turns to dust when wet. Made of antimicrobial plastic using silver (Ag+) ion technology. Color: light blue. Size: 50cm x 40cm x 27cm.