WE CARE, YOU SHOULD TOO. HERE'S HOW... Hand wash your tumbler and lid with warm soapy water before first use. Hand wash your tumbler regularly. Lids are top shelf dishwasher safe. Store tumbler with lid off to allow to dry completely. Use white distilled vinegar or baking soda to help safely remove any stains or discoloration on the inside of your tumbler. After cleaning, rinse thoroughly with warm water and repeat if necessary. Do not place in dishwasher, as this may affect the insulation properties and painted finish. Do not freeze your tumbler or lid. Do not place tumbler on stove or in the microwave. Do not use bleach, chlorine or cleaners with harsh abrasives to clean your product.