Kitty litter box

Claim 1

A cat litter box comprising side and end wall means forming a generally rectilinear box enclosure having a bottom wall with side edges and end edges; side wall means and end wall means integral with the bottom wall along the side and end edges thereof, respectively, said side wall means and end wall means each tapering upwardly and outwardly from the respective edges of the bottom wall to an upper box edge, and each being formed by double panels that are integral and folded against each other along a fold line, respectively, outer edges of the side wall panels and end wall panels extending down toward the bottom wall from the fold lines, respectively, said upper box edge being formed by the fold lines of the side wall panels and end wall panels and defining a peripheral dimension greater than the periphery of the bottom wall to permit the lower portions of similar boxes to be stacked within the upper portions of one box; a cover wall fitting within said rectilinear box enclosure and closely engaging the side and end wall means forming said enclosure; wall means extending downwardly and integral with the cover wall portions extending along the side and end wall panels to support said cover wall spaced with respect to the bottom wall of the rectilinear enclosure and in position below the upper edges of the box, said cover wall and said integral wall means forming an insert with an open bottom, the outer edges of the side wall panels and end wall panels extending toward the bottom wall beyond said cover wall; and a filling of cat litter in the region below the cover wall.