1. Keep the cup dry when not in use for a long time.
2. To prevent odors and stains, please clean them and dry them after use.
3. As rusty red spots will be left after using unclean water, you can soak it in warm water and diluted vinegar for 30 minutes and then clean it.
4. Please wipe the surface of the product with a soft cloth moistened with a neutral detergent and a moistened sponge. The product must be cleaned after each use.
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