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In-Stink-Erator: Dealing With A Smelly Garbage Disposal

2009-09-25-WasteDisposal.jpgA few weeks ago, we noticed a phantom stinky odor in our kitchen. It wasn't the trash. It wasn't the fridge. We finally traced it to the garbage disposal! Here's what we learned about getting it clean and keeping it fresh:

 
 

Garbage disposals are theoretically self-cleaning, but occasionally sludge can build up on the sides of the disposal and particles of food adhere to the grinders. When this happens - and you'll know because you'll notice a phantom stinky odor, too! - the first step is to give the disposal a really good flush.

Put a stopper in the sink and fill it with several inches of hot water. Add a squirt of dish soap. Turn on the disposal and unplug the sink to let the water flush through. This is different than simply running the tap like we usually do since the disposal will actually fill with water. (Of course, if you wash your dishes by hand, you're doing this regularly anyway!)

Next, we threw a few ice cubes and a handful of kosher salt down the disposal. The ice helps knock food off the grinder while the salt scrubs the sides.

For good measure, we repeated the flushing and then ground up a few lemon peels for freshness.

Voila! This seemed to do the trick and we haven't noticed any odors since. If the smell persists, we've heard that you can add a half cup of baking soda down the drain, then pour on a cup of vinegar. Let it fizzle for about ten minutes and then flush everything out with some boiling water.

A plumber also once told us that most people don't run their disposals long enough. If we cut it off as soon as it sounds like the food is done grinding, sludge and particles can be left behind. He said the best way is to run water from the faucet, turn on the disposal, and don't turn anything off for about 5 seconds after it sounds like the food has finished grinding to be sure it has flushed through.

Do you have a good method for dealing with a stinky garbage disposal?

Related: Survey: How Do You Clean Your Oven?

(Image: Flickr member Rachel Zack licensed under Creative Commons)

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Cleaning, Tips & Techniques, Kitchen Hardware, sink, disposal, garbage disposal, kitchen sink, waste disposal

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Comments (20)

Your method is what I do, too. Lemons and limes all the time, too :)

posted by Heidz on September 25th 2009 at 11:04am
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I always put used up lemons in the disposal, they make it smell so nice! If it gets grimy, I pour a bunch of vinegar and baking soda down there and let it sit for a while, and flush it with lots of hot water.

posted by Damfino on September 25th 2009 at 11:07am
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Great tips, thanks. I have a fruit fly problem that I think I've traced to the garbage disposal. I figure these solutions should work for that too.

posted by hyperRevue on September 25th 2009 at 11:15am
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i find that vinegar ice cubes help....

posted by a_funk09 on September 25th 2009 at 11:50am
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The underside of the rubber collar thing that stops splash ups can get gunky too - every now and then I put on the rubber gloves and clean up under the wing things with an old dish brush.

posted by Gallivant on September 25th 2009 at 11:55am
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Grind an occasional lemon or lime rind, and grind all the shells from eggs I use in cooking (they have a particularly abrasive quality). A handful of baking soda with either of these seems to help, at least in the short term.

One thing that wasn't mentioned here is that on a day-to-day basis the water used to flush stuff through the disposal should be cold, not hot or warm. The warmer water can melt fat in the sink, which will immediately solidify on the walls of the (relatively cool) grinder, then eventually go rancid.

posted by manjar on September 25th 2009 at 12:07pm
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Funny I just noticed this morning that mine was a bit stinky. I use lemons and eggshells too. Also, a plumber once told me to only run cold water, never hot when you use the disposal. Hot can make the food particles soft or partially melted and then they stick to the blades and sides even more.

posted by Lysandramarie on September 25th 2009 at 12:21pm
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I use the above methods as well but I freeze used lemon rinds

posted by VeryDelishVeg on September 25th 2009 at 12:26pm
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I also find that the rubber collar thing gets pretty gross... Rubber gloves old dish brush is definitely the way to go. I also sometimes use an old sponge (before it gets thrown out...) to give the collar a good soapdown too.

posted by arbequina on September 25th 2009 at 12:36pm
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I squirt the sides of the garbage disposal with toilet bowl cleaner and use an old, round brush to scrub down the walls. The underside of the rubber collar gets lots of scum built up and the brush does a good job at scouring it out. This gets rid of the stench really well.

posted by lona on September 25th 2009 at 12:59pm
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I do the above flushing with a splash of bleach.

posted by thill on September 25th 2009 at 2:16pm
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So glad you shared these tips with us. Over Labor Day weekend my kitchen flooded (I was away from home and came back to the stinky mess.) The plumber had to go down 25 feet before all the sludge and muck was cleared. So good to know a few tips for cleaning out, flushing away and getting rid of the smell.

posted by Teacherteacher on September 25th 2009 at 3:41pm
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I put a whole bunch of ice cubes down there, like a whole tray.

posted by Jenny in DC on September 25th 2009 at 4:56pm
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Wow, I thought my mom was the only person who owned that colander.

posted by pbelardo on September 27th 2009 at 9:24pm
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I'm going to forward this to our office manager - the kitchens in our office always smell because of this and I'm hopeful your suggestion will do the trick!

posted by Tabitha (From Single to Married) on September 28th 2009 at 6:57am
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@pbelardo...I think everyone's mom has that colander!

posted by GeriAnne on September 28th 2009 at 8:12am
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my mom has that colander!

posted by wendy-rae on September 28th 2009 at 10:42am
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I have that colander too! Made by Tupperware and is I think a late 70's or early 80's vintage. I bought mine at a garage sale years ago and I doubt it was used much and my sister has one, same color that she's had I think since they got married back in the early 80's. I use mine all the time too!

I think I've seen them in that olive green too once.

posted by ciddyguy on September 28th 2009 at 12:18pm
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Instead of drinking soda, I usually drink seltzer water with a slice of lime. So I regularly put lime rinds down the disposal, and that seems to keep it healthy :) If only my indoor composter smelled as sweet.

posted by KimberlyM on September 28th 2009 at 7:03pm
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My Mom has that same colander...and I bet everyone's Mom also has the orange pitcher from the same era of Tupperware! hahaha!

The flushing with the baking soda and vinegar really does help!

posted by juju73 on October 1st 2009 at 9:12pm
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