MyHydrate is made from FDA food-grade materials that are tasteless and odorless. Wash container and let it air dry before first use. Most odor and taste issues arise when containers are stored in wet areas, when left sealed for long periods of time with liquid inside, or when cared for incorrectly. Frequent cleaning will improve your MyHydrate experience. Routinely clean using a dishwasher without heated drying, or hand wash thoroughly in warm soapy water and let it completely air dry before using again. Separate cap and container when cleaning. Do not immerse electronic smart disk in water or place in the dishwasher.