A litter box assembly has a two piece litter box, each piece having an open end and a support frame in which the open ends are pivotally mounted to each other and to the support frame. Elevating support legs are affixed to the support frame and depend therefrom, the legs being held in fixed rigid position by spacers and braces. The supporting legs form an assembly having an open front, a rear, and two sides, with the open front allowing insertion and withdrawal of a waste or trash container.