6. Insulated travel mugs and thermoses
Insulated mugs are fantastic for keeping drinks at the perfect temperature, but the dishwasher can damage the interior.
High heat can damage the vacuum seal between the double walls, making the mug less effective at retaining temperature. Additionally, plastic lids and rubber seals can warp or wear out, leading to leaks, and harsh cleaning agents can leave a lingering chemical taste or odor in the cup.
Care: Hand wash the bottle and lid in warm, soapy water, and use a bottle brush to thoroughly clean the inside. Let the bottle dry completely without the lid to prevent mold. Always follow the manufacturer’s instructions, but hand washing is usually the safest option. 7. Copperware
