Garbage disposals should be used regularly. It is important for them to be turned on every month so the blades don't rust and freeze up. If you notice an awful smell wafting up from your garbage disposal it's a good idea to use a scoop of Bio-clean™ to eat away the small particles of rotting food causing of the bad smell. Excessive usage or jamming too much food in the disposal on a regular basis can also cause problems. If your garbage disposal is making a humming noise it may need to be unjammed or replaced. Give One Call Plumbing a call.