How often should you clean your garbage disposal?
Grumpty's answer
Every month
Why bother
Keeps the sink from smelling like a bin. Standard upkeep. Dull and cheap, and a lot less dull than whatever it's quietly preventing.
What the job involves
- Cut the power first. Then drop a handful of ice cubes down, a little coarse salt or some citrus peel with them, and run the disposal under cold water. The ice scours the gunk off the grind chamber that your eyes can't reach.
- Tip in a bit of baking soda, then vinegar. Let it fizz for a few minutes and flush it through with hot water. That's the part that cuts the grease and knocks the smell back.
- Peel the rubber splash guard back and scrub it top and bottom with an old toothbrush and some dish soap. Most of the stink is hiding on the underside, where nobody ever looks.
- Going forward, run cold water a few seconds after every use, and keep grease, stringy peels and starchy scraps out. Cheaper than cleaning is never letting the muck get a foothold.
Do it yourself, or pay someone?
Yourself. Ten minutes with ice, baking soda, vinegar and a brush, no tools and nothing to take apart. You only ring a plumber when there's an actual fault: clearing a clog or jam runs about $60 to $150, and a full replacement averages $550.
What skipping it costs
$60 to $400 is what a plumber charges to undo what a clean would have prevented. The low end, $60 to $150, is clearing a clogged or jammed disposal; the high end, $250 to $400, is the national average to snake a clogged kitchen drain once the gunk has packed in. Skip the clean and mostly it just stinks, but the same neglect, decaying food and congealed grease coating the chamber, is what walks a sink toward a clog. A handful of ice and a brush sits at the cheap end of all that.
Signs it's overdue
- A sour, rotten smell wafting up from the drain even when the disposal isn't running.
- The sink drains slow or water backs up after you grind something, a sign gunk is building toward a clog.
- Black slime or grime on the underside of the rubber splash guard when you peel it back.
When to start thinking about it
No notice needed, really. Grumpty mentions it the day it comes due and that's that. Mark it done and Grumpty sets the next one, every month, so you can go back to forgetting it exists.
Questions people ask
How often should I clean my garbage disposal?
Roughly weekly if you use it every day, every couple of weeks for regular use, about monthly if it only sees the odd scrap. That's the standard line from cleaning and plumbing pros. Clean it sooner the moment it starts to smell or sounds off, though, since the disposal will tell you before the calendar does.
Can I just pour bleach down the disposal?
Best not. Pros advise against it: bleach can harden grease into a worse blockage and chew through the rubber and seals over time. Ice and salt to scour the chamber, baking soda and vinegar for the smell, and a scrub of the splash guard do the job without wrecking the unit.
Does cleaning the disposal actually stop it clogging?
Not on its own. Cleaning controls the odor and clears loose buildup; what really keeps clogs away is habit. Run cold water during and a few seconds after grinding, and keep grease, oil, stringy peels and starchy food out. Congealed grease coating the chamber is a leading cause of clogs, and no amount of scrubbing undoes pouring fat down there.
Related jobs
Stop keeping this one in your head
This is one job. Your home has dozens more, each on its own clock. Grumpty is a free home-maintenance app: add a job once, it tracks the date, grumbles when it's due, and rolls it forward the moment you mark it done.
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