The oscar litter box from savic is a traditional covered cat toilet the smart litter box is very well made and has an integrated active carbon filter which helps to get rid of any nasty odours the hood is attached to the base tray with sturdy clips which are easy to release for easy cleaning of the tray there is a practical handle so you can easily move the litter box around the hood includes a translucent plastic swing door which lets through plenty light but also allows your cat to do its