6. Copper Cookware
Copper is beautiful but delicate.
Dishwasher detergents can discolor the metal and reduce its natural shine.
Wash copper cookware gently by hand and polish it occasionally to maintain its appearance.
7. Aluminum Cookware
Certain aluminum pots and baking sheets can become dull or develop dark stains after repeated dishwasher cycles.
Uncoated aluminum is especially vulnerable.
Hand washing helps preserve its finish.
8. Fine China
Expensive china deserves extra care.
Gold trim, painted decorations, and delicate glazes may fade or chip inside the dishwasher.
Always check the manufacturer's recommendations before cleaning valuable dinnerware.
9. Crystal Glassware
Crystal is more fragile than ordinary glass.
High temperatures and repeated washing may reduce its brilliance or even cause tiny cracks.
Hand washing with lukewarm water remains the safest method.
10. Insulated Travel Mugs
Many insulated mugs contain a vacuum seal between two stainless steel walls.
Repeated dishwasher cycles may damage this seal, reducing the mug's ability to keep drinks hot or cold.
Unless specifically marked dishwasher-safe, wash insulated mugs by hand.
11. Cheese Graters
Tiny food particles often become trapped inside the sharp holes.
Dishwashers may fail to remove every bit of food while dulling the sharp edges over time.
A brush and warm soapy water usually clean them more effectively.
12. Garlic Presses
Garlic residue frequently remains inside small openings.
Hand washing allows you to clean every hole thoroughly and prevent odors from lingering.
13. Measuring Cups with Printed Markings
Over time, dishwasher detergent can fade printed measurements.
Once the markings disappear, measuring accurately becomes difficult.
Hand washing helps preserve these important guides.
The rest is on the next page
