How to Clean a Garbage Disposal

A garbage disposal can develop unpleasant odors when food waste accumulates inside the grinding chamber or underneath the sink baffle.

Fortunately, routine cleaning is simple and usually takes only a few minutes.

The key is to clean the parts that collect food residue while keeping your hands away from the disposal opening.

How Often Should You Clean a Garbage Disposal?

There isn't a universal calendar schedule for every disposal.

A practical approach is to clean it whenever you notice:

• Persistent odors
• Food residue around the sink opening
• Slow drainage
• Buildup underneath the splash baffle

Regular use with a moderate flow of cold water can also help clear food waste from the disposal. InSinkErator recommends routine use and cleaning the baffle when odors develop.

Why Does a Garbage Disposal Smell?

Food particles can accumulate in places that aren't obvious.

One common location is underneath the rubber splash baffle at the top of the disposal.

Even if the disposal itself appears clean, food residue under the baffle can produce an unpleasant smell.

What You'll Need

For basic cleaning:

• Dish soap
• Scrubbing pad or old toothbrush
• Ice cubes
• Lemon or lime pieces
• Cold running water

You may also use baking soda to freshen the disposal, following the manufacturer's recommendations.

Important Safety Precautions

Never put your hand into a garbage disposal.

If an object falls into the disposal, turn off the power and use an appropriate tool such as tongs to retrieve it if it is safe to do so.

If you are troubleshooting a jam or clog, disconnect power according to the manufacturer's instructions before working around the disposal. InSinkErator specifically advises turning off and disconnecting power before cleaning a clogged unit.

How to Clean a Garbage Disposal

1. Turn off the disposal

Make sure the disposal is switched off.

If you need to reach into or remove components around the opening, disconnect power according to the manufacturer's instructions.

2. Clean the splash baffle

Lift or remove the rubber sink baffle if your model allows it.

Clean the underside of the baffle with a scrub pad and dish soap.

This is one of the most important steps because food residue can accumulate underneath it.

3. Rinse the baffle

Rinse away loosened debris and reinstall the baffle if you removed it.

4. Run cold water

Turn on a moderate stream of cold water.

Cold water is recommended while grinding food waste because it helps keep fats and grease more solid so they can be ground and carried away rather than coating the drain.

5. Freshen with ice and citrus

Put a small amount of ice and lemon or lime pieces into the disposal.

Run the disposal with cold water according to your manufacturer's instructions.

InSinkErator specifically recommends ice combined with lemon or lime wedges as a way to freshen and clean the disposal.

6. Continue running cold water

After the disposal finishes grinding, allow cold water to run for several seconds to help clear the remaining particles.

What Should You Never Put in a Garbage Disposal?

Avoid putting grease or fat down the disposal. InSinkErator specifically advises against pouring grease or fat into the disposal or drain.

Also be cautious with foods that can create problems, including:

• Large bones
• Non-food objects
• Grease and fat
• Large amounts of fibrous material
• Materials prohibited by your disposal manufacturer

The exact recommendations can vary by model, so consult the owner's manual.

What About Baking Soda and Vinegar?

You may see recommendations online to combine baking soda and vinegar in a garbage disposal.

Baking soda can be used to freshen some disposals, but you don't need a chemical reaction to clean the appliance.

For routine cleaning, physically cleaning the splash baffle and using cold water, ice, and citrus according to the manufacturer's guidance is a straightforward approach.

Never use bleach or other chemicals unless your disposal manufacturer specifically says they are safe. InSinkErator specifically advises against using bleach in its disposals.

Signs Your Garbage Disposal Needs More Than Cleaning

Cleaning may not solve the problem if:

• The disposal hums but doesn't grind
• The motor repeatedly trips the reset
• Water leaks from the disposal body
• The sink remains clogged
• The disposal makes unusual mechanical noises
• There is an electrical problem

If the unit is jammed or malfunctioning, follow the manufacturer's troubleshooting instructions or contact a qualified plumber or appliance professional.

How to Keep Your Disposal Cleaner

A few habits can reduce buildup:

• Run cold water while grinding food
• Continue running water briefly after grinding
• Don't pour grease down the drain
• Clean the splash baffle periodically
• Use the disposal according to the manufacturer's instructions
• Don't treat the disposal as a general-purpose trash can

Track Kitchen Maintenance with AruHome

A garbage disposal is only one of the many appliances and systems that need periodic maintenance.

With AruHome, you can create recurring maintenance tasks, record completion dates, store appliance information, and keep your home maintenance history organized.

Quick Checklist

• Turn off the disposal before cleaning
• Never put your hand inside
• Clean underneath the splash baffle
• Use cold water while grinding
• Use ice and citrus to freshen the disposal if appropriate for your model
• Never pour grease or fat down the drain
• Avoid bleach unless the manufacturer specifically permits it
• Investigate leaks, jams, or unusual noises