Install garbage disposals, Garbage Disposals, Waste Disposal Unit,  Waste Disposal Device, Waste Disposal, Trash Removal, Trash DisposalA garbage disposal unit is a device, usually electrically powered, installed under a kitchen sink between the sink’s drain and the trap. This device shreds food waste into small pieces tiny enough to pass through the plumbing system. Since disposals may vary greatly in size and bowl depth, before purchasing the device make sure to check dimensions so that the disposal you’ve chosen will fit under your sink.