Abstract: Pet litter packaging apparatus is disclosed which includes a rectilinear cardboard container whose flaps expand to form a litter box having an interior of sufficient size to accommodate a pet. Litter bags lie on their sides with their openings directed against a vertical door. Beams are used to hold the bags open and to support the flaps in a house-like configuration. The pet eliminates within the bags, which can be disposed of one after the other without the pet owner having to transfer the litter.