Things you absolutely shouldn’t put in the dishwasher

Do’s and Don’ts in the Dishwasher

Your dishwasher is a miracle of convenience – but it’s not designed for everything. Hot water, strong detergents and high-pressure jets can quickly make some items dangerous, sometimes even irreparable.

Here’s a handy guide on what should never be washed in the dishwasher – and how to care for it.

10 things you should always wash by hand

1. Sharp knives (chef’s, for peeling, for steaks)
   • Why: Nozzles dull the blades; the cleaner corrodes the steel.
   • Instead: Wash with mild soap, dry immediately and store in a knife case or block.
2. Cast iron pans and pots
   • Why: Dishwashers remove spices, full rust and destroy non-stick surfaces.
   • Instead: Rinse with hot water, scrub (without soap), dry on the stove and lightly grease with oil.
3. Wooden spars, boards and bowls
   • Why: Heat and water lead to deformation, cracks and bacteria.
   • Instead: Hand wash, air dry in an upright position, and during
     
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