The dishwasher is a great ally in the kitchen, but not all utensils are compatible with this appliance. According to experts mentioned by Good Housekeeping, there are several objects that can be damaged with heat and detergents, compromising their durability and functionality.
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24/06/2026
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A dishwasher makes it very easy to clean the kitchen, however, not everything can be washed in this household appliance.
An article from Good House Keeping reveals that there are utensils that could be damaged. Take note of the next 10 are highlighted.
1. Cast iron coolers
Putting cast iron pans in the dishwasher undoes the work of “healing”. Therefore, you should use other cleaning techniques that do not damage the material.
Another recommendation from experts is never to leave the frying pan in the sink.
2. Wood utensils
Hot water and machine heat can be too aggressive for woodware, such as wooden spoons. They're likely to lose their shape and get cracked.
3. Wood cutting boards
Like wooden spoons, hot water can damage the finish of your favorite wooden board.
4. Grandma's old dishes
If you inherited china dishes be careful to expose it to hot water and detergent, which can corrode details in gold or handmade paintings.
5. Garlic sprinkler
Small pieces of garlic may get stuck in the squeezer and the machine is likely not to remove them all.
6. Thermal cups
You should always check the manufacturer’s instructions before washing the thermal cups.
7. Bottles or bottles with labels
If you want to reuse a bottle of pickles, for example, you should remove the label and glue residue, which can be stuck in the machine filter.
8. Aluminium kitchenware
The aluminum kitchen utensils get damaged over time.
9. Cheese grater
The cheese may remain stuck in the holes even after washing. Use soap and a sponge to remove them.
10. Non-stick kitchen utensils
Many brands of non-stick pans claim that they can be washed in the dishwasher occasionally. However, in time this may damage the non-stick properties.

