Abstract: A kitty litter box is made of cardboard, plastic or other disposable material and can be folded outwardly to an open position for use as a tray to hold kitty litter or other absorbent material for use by cats, and folded inwardly to a closed box after being used and ready for disposal at which time both the box and its contents are discarded. The two opposite side walls of the box each include a diagonal slit at about the midsection of each side wall with a plurality of score lines or fold lines positioned in relation to each diagonal slit which enable a portion of the midsection of each side wall to flex and fold inwardly when the two outer portions are folded along a pair of spaced apart lateral score lines or fold lines in the bottom wall. The two outer portions are folded or pivoted in an arcuate path toward each other whereby one of the outer portions of the box is received within the opposite outer portion. The box is thus folded or pivoted from its open position to a closed position.

Abstract: A disposable kitty litter box and bag assembly in which the box with litter is inside the bag. The bag wall is long enough be gathered together at the top and tied shut with the box and used kitty litter closed inside. The entire assembly is then disposed of together as a unit. The part of the bag wall which extends upwardly beyond the wall of the box inside is doubled back in folds and held in place by a band or other releasable retaining device until the litter has been used and the entire assembly is ready for disposal. At such time, the band is removed or separated to allow the folds of the bag wall to be unfolded and lifted above the box and litter for closing and tying shut.