A cat litter containment enclosure system with four walls that locates a litter container at an elevated level preferably on a shelf where a cat enters the enclosure from a port in a front panel and hops or jumps to a second level for access to a litter container. The enclosure can contain a second pad located on the second level near the litter container so that the cats paws are cleaned as the cat exits the enclosure. The top and front panel of the enclosure can be hinged for easy access for cleaning and/or inspection. Translucent vent holes can also be supplied on the enclosure for air and light. The pet can enter either from the front, or in other embodiments from the side of the enclosure.