**8 things you should never put in the dishwasher** (and why)

8 Things You Should Never Put in the Dishwasher (And Why)
Your dishwasher makes cleaning easier, but putting the wrong items inside can lead to damaged cookware, ruined kitchen tools, and even unexpected accidents.

High temperatures, powerful water jets, and strong detergents can damage certain materials. Here are 8 things you should think twice about before putting them in your dishwasher.

1. Sharp Kitchen Knives
   Dishwasher detergents and repeated washing can dull knife blades. Wooden handles may also crack or loosen over time. Hand-washing is the best option.

2. Wooden Utensils and Cutting Boards
   Hot water can cause wood to swell, warp, crack, or split. Wash wooden kitchen tools by hand and dry them thoroughly.

3. Cast-Iron Cookware
   Dishwasher detergent can strip away the protective seasoning that prevents rust and keeps food from sticking. Always clean cast-iron pans by hand.

4. Nonstick Pans
   High temperatures and harsh detergents can shorten the life of nonstick coatings. Hand-washing helps preserve their surface.

5. Crystal and Delicate Glassware
   Delicate glass can become cloudy, scratched, or damaged during a dishwasher cycle. Valuable crystal glasses are better washed by hand.

6. Insulated Travel Mugs and Thermoses
   Dishwasher heat can damage seals and insulation, potentially reducing their ability to keep drinks hot or cold. Always check the manufacturer’s instructions.

7. Aluminum Cookware
   Certain aluminum pots and pans can become discolored or develop dark spots after exposure to dishwasher detergents. Hand-washing is generally recommended unless the item is labeled