A high walled litter box having a high entry platform which forces an animal to climb up onto the platform to enter/exit the box, the high walls blocking soiled litter and misdirected waste from being thrown from the box. The entry platform includes a grate with apertures therethrough which allows any litter clinging to the animal to drop through to a sloping floor which returns the litter to the interior of the litter box. A scoop rack has a similar design which returns any litter clinging to the scoop to the interior of the box. A bag clip at the top of one of the walls hold one side of a bag so that a user may hold the bag open with only one hand to facilitate the removal of animal waste or soiled litter to the bag.