Here’s how to clean a garbage disposal the easy way: run cold water and grind a cup of ice with a little coarse salt, flush it with baking soda and vinegar, scrub the rubber splash guard with an old toothbrush, then grind a few citrus peels for a fresh smell. Always switch the disposal off, and never put your hand inside.
Contents
That funky smell from the sink usually isn’t the drain itself. It’s food stuck under the splash guard and on the grinding chamber walls. Ten minutes once a week or two fixes it.
Safety first
Before anything else: turn the disposal off at the switch, and unplug it under the sink if it plugs in. Never reach into the chamber with your hand. Use tongs or pliers if something falls in. Most manufacturers, including InSinkErator, stress these same basics in their care guides.
How to clean a garbage disposal in 6 easy steps
- Clear the chamber. With the power off, look inside with a flashlight and remove any objects with tongs.
- Grind ice and salt. Run cold water, turn the disposal on and drop in about a cup of ice with a tablespoon or two of coarse salt. The ice and salt scrub the grinding plate and walls.
- Add baking soda and vinegar. Turn it off, pour in about half a cup of baking soda, then a cup of white vinegar. Let it fizz for 10 minutes.
- Flush with water. Run hot tap water for a minute to rinse everything through, then switch to cold and run the disposal briefly.
- Scrub the splash guard. Lift or fold back the rubber flaps and scrub both sides with an old toothbrush and dish soap. This is where most smells hide.
- Freshen with citrus. Grind a handful of small lemon or orange peel pieces with cold water for a clean scent.
Cleaning schedule and what each step does
| Step | What it does | How often |
|---|---|---|
| — | — | — |
| Run cold water while grinding | Moves food through and keeps fats solid | Every use |
| Ice and salt | Scrubs the grinding plate and walls | Every 1 to 2 weeks |
| Baking soda and vinegar | Loosens grime and freshens | Every 1 to 2 weeks |
| Splash guard scrub | Removes trapped food and smell | Every week |
| Citrus peels | Leaves a fresh scent | As needed |
What not to put down a garbage disposal
Most clogs and smells come from the wrong food. Keep these out:
- Grease, oil and fat: they harden and coat pipes.
- Fibrous foods: celery strings, corn husks and onion skins wrap around parts.
- Starchy foods: pasta, rice and potato peels swell and turn into paste.
- Coffee grounds and eggshells: they build up like sludge.
- Bones, fruit pits and non-food items: they jam or damage the grinder.
When a clean doesn’t fix the smell
If the smell comes back fast, check the dishwasher too, since many dishwashers drain through the disposal. Our guide on how to clean a dishwasher filter helps there. A disposal that hums but doesn’t spin, leaks underneath or keeps jamming may need a reset button press (usually on the bottom of the unit) or a plumber.
Quick FAQ
Can I use bleach to clean a garbage disposal? It’s best to skip harsh chemicals and drain cleaners; ice, baking soda, vinegar and a brush do the job without damaging parts. Why does my garbage disposal smell like rotten eggs? Usually trapped food under the splash guard or in the chamber, so scrub the guard and do the ice and baking soda steps. Should I run hot or cold water with a disposal? Cold water while grinding, then hot water only for rinsing after a clean.
How to clean a garbage disposal: a quick recap
- Safety: power off and never use your hand inside.
- The routine: ice and salt, baking soda and vinegar, scrub the splash guard, citrus to finish.
- Prevention: cold water while grinding and no grease, starch or fibrous scraps.
Final thoughts
Once you know how to clean a garbage disposal, it becomes a quick weekly habit that keeps the whole kitchen smelling better. If odors linger around the house, see how to get rid of a musty smell in the house.
Your turn: what’s the weirdest thing that ever ended up in your garbage disposal? Tell us in the comments.
This guide is based on research and manufacturer guidance, not our own testing.
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