How to Clean a Garbage Disposal

On this page (9 sections)

1. How to clean a garbage disposal in five steps
2. How do you clean under the splash guard?
3. How do you flush the disposal after scrubbing?
4. Which cleaner should you use for lingering odor?
5. What changes if your home has a septic tank?
6. Can you use ice, citrus, or baking soda instead?
7. What mistakes should you avoid when cleaning?
8. What if the disposal still smells or will not start?
9. Which cleaning routine should you choose?

To clean a garbage disposal, disconnect power, remove reachable scraps with tongs, and scrub beneath the splash guard. Remove all tools before restoring power, then flush with cold water as your manual directs.

Food residue can collect in the rubber folds around the opening even when the sink looks clean. Start there, then choose a disposal cleaner if odor or chamber residue remains.

How to clean a garbage disposal in five steps

Start with power disconnected and the drain clear of standing water. If the sink drains slowly or the disposal hums without turning, address that problem before running a cleaning cycle.

Gather tongs or pliers, a long-handled brush, dish soap if your manual allows it, and a cloth for the sink rim. Read the appliance's care directions before using chemicals or removing any parts.

How to clean a garbage disposal safely, step by step

1. Disconnect power. Turn off the wall switch, then unplug the disposal or switch off the correct circuit breaker if it is hardwired.
2. Remove reachable scraps. Lift visible debris with tongs or pliers, keeping your hands outside the chamber.
3. Brush the splash guard. Clean accessible surfaces on both sides, including the underside folds, with the brush and a little dish soap if permitted.
4. Clear the work area. Remove every tool, rinse the sink rim, and dry your hands before restoring power.
5. Flush the unit. Run cold water and briefly operate the disposal according to its manual, keeping water flowing afterward for the recommended time.

Don't rely on the wall switch alone while working with tools near the opening. Never reach into the chamber with your fingers, even with power disconnected.

If an object is wedged beyond easy reach, stop pulling or probing. A cleaner cannot remove a utensil, free a jam, or repair a damaged part.

How do you clean under the splash guard?

Use a long-handled brush on the accessible underside while power is disconnected. This area deserves close attention because food splashes can stick behind the rubber folds.

Gently move the brush around the opening without pushing it deep into the chamber. Wipe the sink flange and the top of the guard with a cloth, keeping the cloth outside the disposal.

Some splash guards lift out for cleaning; others should stay installed. Remove yours only if the manual explains how, and seat it correctly before operating the unit again.

Rinse the brush and inspect it for damage before putting it away. Replace a brush that sheds bristles, since cleaning should not leave loose pieces behind.

How do you flush the disposal after scrubbing?

Flush with cold running water after removing all tools and restoring power. Follow the manual's operating sequence and water-run time rather than filling the chamber with more scraps to help it clear.

Stop immediately if you hear grinding against a hard object, notice a leak, or hear humming without rotation. Repeatedly switching the unit on can turn a cleaning job into a repair.

For everyday food handling and choosing a unit that suits your kitchen, see our garbage disposal buying guide.

Which cleaner should you use for lingering odor?

Choose by format, cleaning schedule, and household needs. Tablets and packets give you separate doses, while a liquid requires measuring according to its bottle directions.

All 4 options below are scented, so skip these choices if you need a fragrance-free cleaner. Never mix them with each other or add household chemicals to a cleaning cycle.

Affresh: for a monthly tablet routine

Affresh suits readers who want a simple monthly reminder rather than a weekly chore. The pack contains 6 foaming tablets, and Affresh says the formula helps remove odor-causing residue from the grind chamber, impeller, and drain pipe.

Affresh says it is EPA Safer Choice Certified and septic safe. Those features make it worth considering when those criteria matter to your household.

Skip it if you dislike citrus fragrance or prefer a pour-in cleaner. Read the package for water flow and cycle instructions instead of borrowing directions from another tablet brand.

CLYND: for individually wrapped doses

CLYND suits readers who want a larger supply with each tablet sealed until use. Its 24 tablets come in individual pouches inside a protective jar, which helps keep unused doses away from moisture.

CLYND recommends use once or twice a month and specifies a 15-second hydration step before running the disposal. Follow the complete package directions, including water use, rather than treating that pause as the whole procedure.

Skip it if you want the fewest preparation steps or don't have storage space for a jar. Keep the remaining pouches closed and away from sink splashes.

Roebic K-27: for readers who prefer liquid

Roebic K-27 suits readers who would rather pour a measured dose than handle a tablet or packet. The 32-fluid-ounce bottle contains a bacteria and enzyme formula intended to break down residue and help reduce disposal odors.

Roebic says it contains no solvents and is safe for all plumbing. Follow the bottle's dose and timing instructions; don't assume it uses the same running-water cycle as a foaming tablet.

Skip it if you prefer premeasured portions. The bottle size alone does not establish how many cleaning sessions it provides, so use the stated dose when planning your routine.

Glisten: for a weekly packet routine

Glisten suits households that prefer adding disposal care to a weekly sink-cleaning session. Its biodegradable packets produce lemon-scented foam, and Glisten says they clean the sidewalls and beneath the splash guard.

Glisten says the formula is safe for disposals, plumbing, and septic systems. Use the packet exactly as directed, including any instructions about keeping it intact.

Skip it if a weekly cleaner schedule feels impractical. Foaming beneath the guard also doesn't remove the need to brush visible deposits when they build up.

What changes if your home has a septic tank?

Choose a cleaner with explicit septic guidance, then follow its dose. Affresh, CLYND, and Glisten each describe their disposal cleaners as septic safe.

Roebic's general plumbing-safety statement is not a substitute for checking its bottle for septic instructions. Don't infer septic suitability from the liquid format or enzyme ingredients alone.

Cleaner choice also doesn't change how much food your septic system should receive. See our guide to using a garbage disposal with a septic tank for the broader disposal decision.

Can you use ice, citrus, or baking soda instead?

Use a household method only if your disposal manual allows it. Ice and salt do not replace brushing the splash guard, and citrus fragrance does not establish that trapped residue is gone.

Don't feed large amounts of peel into the unit to cover a smell. Put scraps in the trash or compost instead, and clean the source of the odor.

Never combine vinegar with bleach or other cleaners. Adding baking soda and vinegar to a commercial cleaner changes its intended use without giving you a reliable cleaning benefit.

What mistakes should you avoid when cleaning?

Avoid extra doses, mixed chemicals, and running a jammed unit. More cleaner cannot compensate for blocked drainage, trapped objects, or residue left beneath the splash guard.

Don't judge the job by foam height or fragrance alone. Once the cycle is complete, check that the sink drains normally and reassess odor after the scent fades.

Keep grease, oil, and large food loads out of the drain. Follow your manual for water use and feed allowed scraps in small amounts to limit residue between cleanings.

Never use drain-opening chemicals unless both the chemical and disposal instructions permit them. If the motor hums without turning, stop and read why a garbage disposal hums but does not spin.

What if the disposal still smells or will not start?

Persistent odor with slow drainage, leaks, or unusual noise needs troubleshooting. Repeating cleaner cycles can delay finding the cause.

With power disconnected, check accessible splash-guard folds and the sink rim for missed grime. If those areas are clean and the drain still smells, a qualified plumber can check for a drainage problem.

If the unit will not start, see where to find the garbage disposal reset button and follow the manual before attempting a reset. Stop using a unit that smells burnt.

Recurring trouble may call for a repair assessment. Review what to check before replacing a garbage disposal before deciding that odor alone means you need a new unit.

Which cleaning routine should you choose?

For how to clean a garbage disposal, make brushing and flushing your starting point, then choose one cleaner schedule you can follow. Pick Affresh for monthly tablets, CLYND for individually wrapped doses, Roebic for liquid, or Glisten for weekly packets.

If cleaning leaves you with humming, leaks, or repeated clogs, move to troubleshooting rather than stronger doses. If replacement becomes necessary, use our garbage disposal buying guide to compare the features your kitchen needs.

Frequently asked questions

How often should you clean a garbage disposal?

Clean the splash guard whenever you see residue or notice food odors, with power disconnected. Follow your chosen cleaner's schedule: Affresh recommends monthly use, CLYND once or twice monthly, and Glisten weekly.

More frequent dosing is not a substitute for removing trapped scraps or investigating slow drainage.

Can you clean a garbage disposal with ice and salt?

Use ice and salt only if your disposal manual allows them, and follow its directions for amounts and operation. They do not replace brushing beneath the splash guard or removing reachable scraps.

Disconnect power before using any tool, and never put your fingers into the disposal chamber.

Can you use bleach to clean a garbage disposal?

Use bleach only if your disposal manual specifically permits it, and never combine it with another cleaner. Bleach can react dangerously with vinegar and other cleaning chemicals.

A purpose-made disposal cleaner is an option for residue, but you still need to follow its directions and the appliance's care instructions.

What should you do if the disposal still smells after cleaning?

Check beneath the splash guard and around the sink opening for remaining residue, with power disconnected. If those areas are clean, use a disposal cleaner according to its directions.

Odor that returns with slow drainage, leaks, or unusual sounds calls for troubleshooting rather than another dose of cleaner.