Blocking in 3 ways: the oscillating front door is equipped with slide closures, can be adjusted only as input, only outside or free access to suit the preferences of any cat. Semi-closed design: this sandbox has plenty of space for small and medium cats to move freely inside and outside, and can accommodate up to 10 pounds of cat. The upper open design increases the air circulation and dissipates unpleasant smells, hides the sand to promote privacy and helps to deter the curious dogs, Top tapa of sieve: the small holes in the lid send the sand back to the sand tray and prevent it from spreading when leaving its sandbox for kittens. 2-1 cleaning bucket and brush included, Removable drawer: the cat sandbox comes with a removable sand tray for a smooth cleaning. Polished finish that is resistant to odor and stains. Just slide out, download and replace.