15 Things You Should Never Put in the Dishwasher

I would be lost without my dishwasher. In fact, when our house was built years ago we installed two dishwashers. These have saved me countless hours each week, especially since we have larger family. A dishwasher has helped us spend our time doing more important things.

However, there are just some things you should never think about putting in your dishwasher.

You might even realize that there are a few major kitchen items that are actually supposed to be hand-washed only. Even I am guilty of this too!

To keep your items in top shape, make sure to keep these 12 Things You Should Never Put in the Dishwasher!

1. Wooden Cutting Board & Utensils

Wood and dishwashers don’t mix ever. The heat of the dishwasher can cause the wood to warp over time. Even the drying cycle can make your wooden cutting boards and utensils crack. 

Instead, wash your items by hand by using soapy water. Be sure to treat them once in a while with a wood wax to help protect and extend the life of wooden cutting boards and utensils.

2. Thin Plastic Items

Some soft plastics cannot handle the dishwasher heat. They may even melt inside the dishwasher too. You can keep and reuse these thin plastic items, but just wash them by hand instead. 

3. Cast Irons

Cast irons should never go into the dishwasher. You shouldn’t even wash cast irons with soap. Both of these with damage the finish and seasoning off the cast iron. Instead, stick to using coarse salt to help scrub it down.

If you do wash your cast iron with soap you can reseason the cast iron easily. Just use a generous amount of oil to coat it inside and out evenly. Vegetable or cooking oil works great. Then bake it in the oven at 350-degree for one hour. Turn off the oven and let the pan cool. Remove the cast iron and wipe down the remaining oil. 

4. Bottles With Narrow-Necks

Narrow-necked bottles are likely not going to get as cleaned as you want in your dishwasher. Instead, wash them by hand with soapy water.

5. Kitchen Knives

Placing your good knives in the dishwasher is never a good idea. The detergent will dull the blade of the knife and may even loosen the knives handles. Instead, wash your kitchen knives by hand in hot soapy water.

6. Labeled Items

Putting labeled items in the dishwasher in hopes that the sticker will be removed is never a good idea. The upper layer of the label is removed from the item, but the sticky residue still remains. Instead, use another method to remove stickers from items before washing them.

7. Fine China & Crystal 

Fragile items like fine china and crystal should always be washed by hand. These items can chip and lose their finish in the dishwasher easily. Once you wash them by hand and let them air dry, you can buff them with a microfiber cloth to make it shine.

8. Grates, Presses, Microplanes & More

The dishwasher doesn’t do a great job of cleaning out the tiny crannies and nooks found in grates, microplanes, and presses. Instead, wash these items by hand to make sure they are cleaned properly.

9. Copper & Other Precious Metals

The pretty colored pot and other precious metals in the dishwasher will get dull or discolored overtime. Keep silver, gold, bronze items out as well. They will eventually tarnish and lose their gleam.

10. Printed Measuring Cups

Overtime the dishwasher will fade the printed markings on the side of your measuring cups. Wash the items with printed ink by hand to make sure the labels stay readable for a long time.

11. Nonstick Cookware

The nonstick coating can quickly wear down by harsh detergents you use to wash your dishes in the dishwasher. Instead, hand wash to extend the life of your nonstick cookware.

12. Rubber Items & Parts

Rubber doesn’t do too well in a dishwasher. Often the detergents will make these items and parts dull and degrade. Items with gaskets, seals, and bases with rubber should not be put into the dishwasher. Just take a few extra minutes to wash these items with rubber parts by hand.

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