Abstract: A disposal system for animal waste includes a housing having upstanding walls defining an entranceway and a floor which slopes downwardly and rearwardly from a forward edge at the entranceway to a rear edge. A collection groove or trough extends transversely of the floor at the rear edge and is provided with a bottom surface which slopes downwardly to a disposal pipe. The pipe in turn is connected to an electrical pump which is adapted to move waste from the collection groove to a sewer. Preferably the pump is provided with macerator blades which will macerate or comminute the solid waste to improve its flowability to the sewer. The floor is provided with a plurality of generally parallel grooves in the upper surface thereof, which grooves collect liquid waste and allow it to flow downwardly to the collection groove without much liquid remaining on the upper surface of the floor.