A cat litter box apparatus for accommodating a plurality of cats, the apparatus controlling odors by providing a lid and two doors which return to a closed position automatically. The apparatus further provides either manual screening of litter via the sieved half-round ended scoop, or semi automatic litter screening via temporary placement of the scoop within either end of the box. The box is selectively tilted and supported in a chosen tilted position. The box further comprises wheels and an omnidirectional caster.