Abstract: A disposable kitty litter box includes a box bottom having its inside completely sealed against moisture and further having two sets of opposite side walls, one set of which has three moisture barriers. A box top is sized so that the box bottom will fit inside the box top when the box top is turned upside down. Thus, the box top in its upside down position serves as an additional moisture barrier. For shipping purposes, a litter package is placed inside the box bottom. The box top is sized to slightly larger dimensions than the box bottom in order to ensure a close fit therewith.