Just recently we had an issue with the garbage disposer being extremely noisy. It sounded like it was coming out after us! I poured about 1/2 cup of
vegetable oil down the disposer, without having the water on, and ran it for about 2 minutes. Then I filled a glass with ice and dumped that into the disposer. We now have a quieter, less scary garbage disposer, without spending the money to have a repairman come "fix" it!!