The best way to deodorize a garbage disposal is to never let it get stinky in the first place. I used to avoid running it longer than necessary, thinking I was saving water. But it turns out that the best idea us to run it several seconds after all grinding has stopped. Doing that, it stays fresh.
- To clean a disposal, grind lemon slices and ice.
- For a deeper clean, disposer manufacturer Insinkerator suggests you put a stopper in the sink opening and half fill the sink with warm water. Mix in 1/4 cup baking soda. Turn on the disposer at the same time you remove the plug, to flush the mechanism. With the disposer off, remove the rubber baffle at the opening and wash by hand.
- My experience is that the underside of the baffle and the neck of the disposal are a source of stinkiness. but much less so since I began running it a little longer.
- Small bones, fruit pits, and ice are good for your disposal.
- Use cold water. I read arguments on both sides on this one but most of the manufacturers recommend cold water.
One more tip: Compost. By feeding your vegetable remains to the garden, you don't have to use the disposal as often.