1. With the drawer side facing you, place the grated tray on the base, ensuring the grate is directly above the drawer. NOTE: The system is built to funnel urine to the grate, so it's important to ali

Purina Tidy Cats Litter System, Non-Clumping, Breeze XL All-in-One Odor Control & Easy Clean Multi Cat Box – 18 lb. Box