Abstract: A disposable litter enclosure which, in the preferred embodiment, embodies a moisture resistant box containing, in closed form, cat litter and a pre-formed framework for interconnecting the raised side extensions formed from the top of the box. Alternatively, the framework may be attached to the box or otherwise be available. The framework is a continuous, encircling, rim-like member of rectangular shape with a continuous vertical slot formed in its underside, and, where intended to be packaged within the box, is of less dimension than the closed box. The top edges of the side extensions are slipped into the slot of, and thus engage with, the framework to provide a continuous rigid support connecting the tops of the extended sides. The side extensions of the box, where the framework is packaged therein, are tapered to permit joining at the framework without gaps where adjacent side edges of the side extensions meet.