The hard food disposer is a small garbage disposer that is in the dishwasher located in the drain. The benefit of having a hard food disposer in the dishwasher is that you do not need to hook up a garbage disposer to the dishwasher. However, if you have an existing garbage disposer, it is still recommended that you hook up the disposer to the dishwasher. A tip that may help you: It is important to remember to clean the filter on the bottom of the dishwasher once a month for optimal performance of the dishwasher. We want your dishwasher to last a very long time!