MaintainlyHow often should you clean your garbage disposal?
Clean garbage disposal once a month. The commonly recommended range is monthly. A neglected disposal smells, jams, and corrodes.
A waste disposal unit grinds food waste finely enough to go down the drain. Residue accumulates in the grinding chamber and on the rubber baffle, or splash guard, in the collar, which is an easy place to overlook and a common place for a smell to start.
Why does cleaning your garbage disposal matter?
A neglected disposal smells, jams, and corrodes.
What happens if you skip cleaning your garbage disposal?
The smell is the obvious symptom. A unit that jams and is left running can overheat until its overload protector trips, and it will not run again until the jam is freed and the reset button is pressed.
How do you do it?
- Never put your hand in the chamber. InSinkErator’s instruction is not to place your hand in the disposal at any time. Use tongs or pliers if you need to retrieve something.
- Grind a handful of ice cubes. InSinkErator says ice can help clean the grinding components, though it usually melts before it cleans the chamber completely. Run cold water throughout.
- Clean the splash guard. With the unit switched off, lift the rubber flaps and scrub both sides with an old toothbrush and detergent. On models with a removable baffle, pull it out, rinse it and wipe it clean.
- Grind citrus wedges. Feed lemon or orange wedges in one at a time with a steady stream of cool water. The rinds help clean the grinding components and the scent freshens the unit.
- Flush with cold water. Keep the cold tap running until the grinding has finished and the chamber has rinsed through.
- Free a jam with the hex key if needed. Switch the unit off first. Insert the supplied wrench or a quarter-inch hex key into the socket at the bottom centre and work it back and forth until it turns freely. Remove the obstruction with tongs, then press the red reset button on the underside.
What does it take?
How do you know cleaning your garbage disposal is overdue?
- A persistent smell that returns soon after cleaning, which suggests the splash guard has been missed
- The unit humming without turning, which means it is jammed and should be switched off
- Grinding much louder or slower than usual
- Water draining slowly from the disposal side of the sink
- The reset button tripping repeatedly
What do people get wrong?
- Reaching into the chamber by hand instead of using tongs
- Feeding it waste the manual says it cannot grind; check the maker’s list for your model
- Pouring grease or cooking oil down it
- Running it with the tap off, or switching it off before the water has flushed everything through
What changes how often you need to do it?
- Heavy use needs cleaning more often
- On a septic system, the US EPA advises eliminating or limiting disposal use, and says the tank will need pumping more frequently if you use one
When should you stop and call someone?
If the reset trips repeatedly, if the unit leaks from the body, or if it hums but will not free with the hex key, check the breaker and then call the maker’s service line or a plumber. Have a hard-wired unit replaced by a qualified person rather than rewiring it yourself.
Does this differ in the US, UK, Australia or Canada?
United States
Disposals are common in US kitchens. If the home is on a septic system, the EPA advises eliminating or limiting their use, and never pouring cooking oil or grease down the drain.
United Kingdom
Many British kitchens have no waste disposal unit, and food waste goes to a council caddy instead: under the Simpler Recycling reforms, councils in England are required to provide weekly food waste collections for most homes from 31 March 2026. If you do not have a unit, this task does not apply to you, and the equivalent maintenance is keeping the sink trap and strainer clear.
Australia
Less common than in North America, though units are available. Where your council collects food organics, that is the simpler route for scraps. Fitting or replacing a unit involves plumbing and electrical work that needs licensed trades.
Canada
Rules on food waste grinders are set by each municipality through its sewer bylaw, so check locally before fitting one. Green bin organics programmes are an alternative: the City of Toronto asks residents to catch food scraps in a sink strainer and put them in the Green Bin.
Frequently asked questions
Why does cleaning your garbage disposal matter?
A neglected disposal smells, jams, and corrodes.
What happens if you skip cleaning your garbage disposal?
The smell is the obvious symptom. A unit that jams and is left running can overheat until its overload protector trips, and it will not run again until the jam is freed and the reset button is pressed.
Does cleaning your garbage disposal differ by country?
Common US/CA. Rare in the UK, hide for UK by default.
How we put this together
The figures, intervals and legal points on this page were checked against the sources listed below. The default interval and accepted range are the ones Maintainly uses in its task library. Costs and times are typical ranges and vary by region and by home. Your own manufacturer's instructions come first, and gas, electrical and structural work belongs with a qualified professional. How we research and write.
Sources
- How to Clean Garbage Disposal 3 Ways, InSinkErator. Checked 11 October 2026.
- Fixing a Jammed Garbage Disposal, InSinkErator. Checked 11 October 2026.
- How to Care for Your Septic System, US Environmental Protection Agency. Checked 11 October 2026.
- Simpler Recycling in England: policy update, Department for Environment, Food and Rural Affairs. Checked 11 October 2026.
- What Not to Flush or Pour Down the Drain, City of Toronto. Checked 11 October 2026.
Next steps
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