Garbage disposals are very low maintenance appliances. Simply making sure you frequently use your disposal can help to remove any excess food scraps that accumulate over time. Below are a few steps to clean out your disposal: First, turn off your garbage disposal, Next, Remove the sink baffle and clean the underside and place back in sinkhole, Turn on the disposal and run a medium stream of cold water, Place ice cubes mixed with cleaning solution to freshen up the smell.