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Posted:  |  Updated: 08/31/12 10:48 AM ET

Items You Should Never Put In The Dishwasher

Washing dishes is a kitchen chore that we're hardly eager to get to. It takes a lot of the fun out of eating at home -- which is why the dishwasher has such a magical air to it (and why takeout is so appealing). Dishes go into it dirty and they come out clean, all with the simple push of a button. But not everything can go into this handy kitchen appliance -- some items can't handle the hot temperatures and others are too delicate for the abrasive detergent.

Loading the dishwasher only to unload warped containers, cracked cutting boards and chipped china wanes the sparkle and shine of its convenience. Don't let this happen to you. Get to the bottom of what is and is not safe for the dishwasher.

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  • Crystal/Hand-Blown Glass

    Crystal and hand-blown glass are sensitive to heat so they run the risk of cracking in the dishwasher; but that's not the only risk. Detergents can chip at them, causing them to lose their shine.

  • Good Knives

    Good knives should never be put in the dishwasher -- they're more fragile than you might think. The agitation of the dishwasher's cycle turns the blade dull; and it can get dings and scratches from hitting other objects.

  • Cast Iron

    Those who are believers in the cast iron skillet know how much work goes into getting a well-seasoned pan. Putting a cast iron through the dishwasher will "clean" all that seasoning right off -- and the iron can rust.

  • Wooden Spoons And Spatulas

    Before putting anything made from wood in the dishwasher, check the manufacturer's instructions. Wooden items can easily warp, crack, come apart or lose their finish with the high temperatures of the dishwasher.

  • Disposable Aluminum

    While these items themselves might not be damaged by the dishwasher, they can easily shift about during a cycle and transfer black marks to dishes and other items. Other aluminum items are not recommended for dishwasher cleaning either, they're susceptible to nicks and scratches.

  • Disposable Plastics

    According to the Whirlpool site, plastics are dishwasher safe (though you should check with the manufacturer's recommendations first) but disposable plastics are not. So those yogurt containers that you double as Tupperware, best to wash those by hand. And plastics that can withstand the heat of the dishwasher should only be loaded on the top rack.

  • Hollow-Handle Knives

    While it's not recommended to wash your good knives in the dishwasher, most steak knives can be put through. The ones that shouldn't are hollow-handle knives. Most of them are attached by adhesives that can loosen when washed in a dishwasher.

  • Bottles And Cans

    If you want to rinse cans and bottles to recycle or reuse, it's best to wash them by hand. Labels attached with glue can loosen and clog the spray arms or pump and affect dishwasher performance.

  • Gold Trim

    That beautiful gold trimming on your plates, glasses or bowls run the risk of being removed by the dishwasher's harsh detergents and water pressure. We advise you wash these by hand.

  • Non-Stick Pots And Pans

    Many non-stick pots and pans loss their "non stick" quality when washed in the dishwasher. It's better to err on the side of caution and wash these in the sink.

  • Gold-Colored Flatware

    For those of you eating with gold-colored forks and knives (or if you who just happen to have gold flatware) the dishwasher is not advised. The color of your forks and knives will fade as a result of the harsh cycles.

  • WATCH: Determining Dishwasher Safe Utensils

FOLLOW TASTE

Washing dishes is a kitchen chore that we're hardly eager to get to. It takes a lot of the fun out of eating at home -- which is why the dishwasher has such a magical air to it (and why takeout is so ...
Washing dishes is a kitchen chore that we're hardly eager to get to. It takes a lot of the fun out of eating at home -- which is why the dishwasher has such a magical air to it (and why takeout is so ...
Filed by Julie R. Thomson  | 
 
 
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HUFFPOST COMMUNITY MODERATOR
spartanmom
My micro-bio is empty
10:01 AM on 06/16/2012
Also NEVER NEVER put stainless steel and silver together in the cutlery basket. It'll damage the steel.
07:44 AM on 06/14/2012
i have to say some of the comments on here are pretty funny. i enjoyed it very much! so no condoms, kitties, laptops, or bongs. got it!
02:00 PM on 06/13/2012
I ruined an expensive cast iron pan putting it in the washer, was never the same after-live and learn :)
HUFFPOST COMMUNITY MODERATOR
spartanmom
My micro-bio is empty
09:59 AM on 06/16/2012
did you re-season it?

Get some Barkeeper's Friend and some superfine steelwool and really give it a going over—meaning lots of elbow grease. Then coat it with vegetable oil and set it in the oven and bake at 250°F for about 2 hours.
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HUFFPOST SUPER USER
Elroy Jetson
Spacely Space Sprockets, Inc.
07:52 AM on 06/13/2012
So, after reading this, are we really allowed to put dishes in the dishwasher? LOL!
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candlesmp
life is as good as you make it
11:38 PM on 06/12/2012
If you've ever used a dishwasher before in your life, most of these are a no-brainer. The only one I would dispute is the china. If you put it on the most "delicate" of settings - it's safe.
08:35 PM on 06/13/2012
You are right...only thing about china is I don't have to worry about it...LOL...
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HUFFPOST SUPER USER
sinnerG7
If I believed in God I'd be going to Hell
10:00 PM on 06/12/2012
Totally off subject Hey HP why isn't the notifications tab working, how am I supposed know who doesn't like my snarky comments?
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candlesmp
life is as good as you make it
11:37 PM on 06/12/2012
yeah, my notifications tab is completely wonky. Mine says I have 14 notifications, when there are none. I can't clear it.
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HUFFPOST SUPER USER
sinnerG7
If I believed in God I'd be going to Hell
11:19 AM on 06/13/2012
Thanx for responding,mine said 7 when there were none now it says 20 but won't even function.glad it's not a problem w/ my computer.Thanx again
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jenkait
Elizabeth Warren for President!
09:07 PM on 06/12/2012
I read this because I thought I might learn something... But I don't put disposable plastics or tin cans in the dishwasher (?!!) and I don't own anything gold or hand-blown glass...

I kind of hoped to learn something useful... Like those Ziploc containers. I used to handwash them, but now I put them on the top shelf of the dishwasher. They do say dishwasher safe, and...life's short, what can I say?!
HUFFPOST SUPER USER
stabornc
05:58 PM on 06/12/2012
You can put china with gold or silver bands in the dishwasher with the following condition: use the lowest heat possible, air dry, and do not touch until the china is completely cool.

A great use for the dishwasher is for silk plants. Lay them in the top rack, turn to rinse cycle low heat. Remove and they are fresh and clean.
05:51 PM on 06/12/2012
Dishwasher detergents are corrosive, not abrasive, as they usually contain some kind of very powerful alkaline (opposite of acid) substance. This is why it's unwise to use the dishwasher to clean metal car parts.
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HUFFPOST SUPER USER
OriginalName
Moral indignation is jealousy with a halo.
05:21 PM on 06/12/2012
Does anyone actually put bottles, cans or disposables in the dishwasher??
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no conservative
Poker Player
08:03 PM on 06/12/2012
Never wash your car in a dish washer ☺
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jenkait
Elizabeth Warren for President!
09:07 PM on 06/12/2012
Actually, I think my last car might've almost fit... ;)
05:19 PM on 06/12/2012
I can't believe I read this article, please put me in the dishwasher.
07:11 PM on 06/12/2012
Kimberly you made me laugh--I feel the same as you.
This user has chosen to opt out of the Badges program
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08:36 AM on 06/13/2012
I prefer a car wash for that all over feel good clean.
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jenkait
Elizabeth Warren for President!
09:04 PM on 06/12/2012
Fanning you just for that!!
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HUFFPOST SUPER USER
Elroy Jetson
Spacely Space Sprockets, Inc.
07:49 AM on 06/13/2012
Me too. Spin cycle, please. LOL!
05:11 PM on 06/12/2012
Consider the lobster.
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HUFFPOST SUPER USER
Elroy Jetson
Spacely Space Sprockets, Inc.
07:53 AM on 06/13/2012
Hmmm....
HUFFPOST SUPER USER
Rick Cain
Angry Young Man
04:58 PM on 06/12/2012
Is it okay to put motherboards, sneakers and baseball caps in there?

I recommend washing your motherboard once a year to remove dust and grime. Intel generally require once a year, AMD boards can go once every 2 years.
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HUFFPOST SUPER USER
OriginalName
Moral indignation is jealousy with a halo.
05:23 PM on 06/12/2012
I actually knew someone who put the kids' sneakers in the dishwasher...
08:32 PM on 06/12/2012
That's actually nothing-how many parents of sons have found their sons' athletic cups in the dishwasher? I don't have sons, but you can bet I'd be hollering bloody murder if one of them did THAT! Bleech!
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HUFFPOST SUPER USER
Elroy Jetson
Spacely Space Sprockets, Inc.
07:51 AM on 06/13/2012
They actually make a device to wash your baseball caps in the dishwasher.
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HUFFPOST SUPER USER
Elroy Jetson
Spacely Space Sprockets, Inc.
07:54 AM on 06/13/2012
...but no fatherboards.
04:55 PM on 06/12/2012
who would waste the water/energy to wash cans/bottles when they are just going to be recycled anyways?
08:34 PM on 06/12/2012
We flatten soda cans because some recyclers pay you for them (my parents give theirs to us for the same reason). I don't know about you, but I'd rather have clean squished soda cans than ants in my garage! Not to mention it helps cut down the mold and the stank in the recycling bin to rinse out the recyclables.
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HUFFPOST SUPER USER
Elroy Jetson
Spacely Space Sprockets, Inc.
07:55 AM on 06/13/2012
There's your answer, my friend. One who Dances with Dragons... but not with ants. LOL!
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Ian Llangan
Your Invisible Sky Friend Is Morally Abhorrent
04:16 PM on 06/12/2012
But! Brushes, combs (remove as much stray/excess hair as you can first) and bathroom implements like toothbrushes, razor handles, nail scissors can be sterilized via dishwasher (heavy duty cycle), as can plastic and metal hot/cold air vents/grates from your home's HVAC system, stove and over-the range exhaust fan filters. Hand-held garden tools, removeable cupholders and coin trays from your car, etc., etc. And if you have a ballcap form (avail through eBay etc.) , most baseball caps comes out STUNNINGLY clean too. There are a bout a million things you CAN clean in the dishwasher that most people never think of!