Wash with clean or soapy water after each use.The product can also be put in the dishwasher if necessary.Warning, when washing it in the dishwasher, the cap seal may come off. Make sure to put it back on if this should happen, to guarantee the water-tightness of your water bottle Let dry and store bottle and cap separately.For a thorough clean, soak the product overnight in a solution of water and baking soda.Do not put the bottle in the microwave or freezer, and do not expose it to flames or any other heat sources.