Things You Absolutely Should Not Put in a Dishwasher

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đ§ź Dishwasher Dos & Donâts
Your dishwasher is a marvel of convenienceâbut itâs not built for everything. The mix of scalding water, strong detergents, and high-pressure jets can damage certain items fast, sometimes beyond repair.
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Hereâs a practical guide to what should never go in the dishwasherâand how to care for them instead.
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đŤ 10 Items to Always Hand-Wash
1. Sharp Knives (Chefâs, Paring, Steak)
- Why: Jets dull blades; detergent corrodes steel.
- Instead: Wash with mild soap, dry immediately, store in a sheath or block.
2. Cast Iron Skillets & Pots
- Why: Dishwashers strip seasoning, cause rust, ruin non-stick surface.
- Instead: Rinse with hot water, scrub (no soap), dry on stove, oil lightly.
3. Wooden Utensils, Boards & Bowls
- Why: Heat + moisture = warping, cracks, bacteria.
- Instead: Hand-wash, air-dry upright, condition monthly with mineral oil.
4. Nonstick Cookware (Teflon, Ceramic, etc.)
- Why: Detergent breaks down coating, leading to flaking.
- Instead: Use a soft sponge + mild soap; avoid steel wool.
5. Insulated Drinkware (Yeti, Hydro Flask, Thermos)
- Why: Heat ruins vacuum seals; gaskets trap grime.
- Instead: Wash body by hand; clean lids/gaskets separately with a bottle brush.
6. Aluminum Bakeware & Pans
- Why: Detergent reacts, leaving dull, dark, or pitted surfaces.
- Instead: Hand-wash with gentle cleaner (Bar Keepers Friend works well).
7. Copper Cookware
- Why: Loses shine, tarnishes, may leach metal.
- Instead: Wash by hand; polish with lemon + salt or copper cleaner.
8. Fine China & Metallic-Rimmed Dishware
- Why: Gold/platinum fades; delicate glazes crack.
- Instead: Wash gently in warm, soapy water; dry with lint-free cloth.
9. Crystal & Hand-Blown Glass
- Why: Heat causes cloudiness or cracks.
- Instead: Wash carefully by hand; avoid sudden temperature changes.
10. Graters, Garlic Presses & Small Gadgets
- Why: Food lodges in crevicesâdishwasher wonât clean thoroughly.
- Instead: Scrub immediately with a small brush under running water.
â ď¸ âUse With Cautionâ Items
- Stainless Steel: Usually safeâcheck manufacturerâs instructions.
- Silicone Bakeware: Dishwasher-safe (top rack preferred).
- Plastic Containers: Only if labeled âdishwasher-safeâ; place on top rack to prevent warping.
â¤ď¸ The Takeaway
Saving 30 seconds by tossing the wrong item in the dishwasher can cost you years of use. Protect your tools, and theyâll serve you for a lifetime.
⨠When in doubt, hand-wash. Your kitchen will thank you.




