The dishwasher feels like a modern luxury -- until you pull out a warped cutting board or a shattered antique or heirloom. The temptation to load everything into the rack for easy cleaning is real, but that convenience comes at a cost.
Scorching temperatures and high-pressure water jets are great for blasting grime off plates, but they're no friend to your more delicate kitchen gear. Porous materials, such as wood, will crack and warp, while delicate glass can easily succumb to thermal shock and break into pieces.
Even worse, that "deep clean" will dull your expensive chef's knives and strip the finish off your favorite cast-iron cookware. Essentially, if you value the longevity of your tools, you have to stop treating the dishwasher like a one-size-fits-all solution.
Before you slam the door on your next load, take a second to filter out the casualties. Your high-end cutlery and seasoned cookware are better off in the sink. Here are the items you should never, under any circumstances, run through the dishwasher.
11 things you should never put in the dishwasher
1. Insulated mugs
Insulated mugs can be damaged by the pressure from a dishwasher. The Darling Effect
The high heat and pressure of a dishwasher can damage or break the vacuum seal that makes these insulated vessels effective. Instead, wash them by hand using warm water and soap.
2. Wooden cutting boards
Always air-dry a wood board on its edge for at least an hour before storing it. David Watsky/CNET
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