Things You Absolutely Should Not Put in a Dishwasher

Instead: Hand-wash, air-dry upright, and condition monthly with mineral oil.
Nonstick Cookware (Teflon, Ceramic, etc.)
Why: Detergent breaks down coatings, causing flaking.
Instead: Use a soft sponge with mild soap; avoid steel wool.
Insulated Drinkware (Yeti, Hydro Flask, Thermos)
Why: Heat damages vacuum seals; gaskets trap grime.
Instead: Wash the body by hand; clean lids and gaskets separately with a bottle brush.
Aluminum Bakeware & Pans
Why: Detergent reacts, leaving dull, dark, or pitted surfaces.
Instead: Hand-wash with a gentle cleaner (Bar Keepers Friend works well).
Copper Cookware
Why: Loses shine, tarnishes, may leach metal.

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