Here’s how often you should wash your reusable water bottle

Use hot soapy water: Wash your bottle with hot soapy water and a bottle brush to reach all corners.
Rinse thoroughly: Make sure to rinse the bottle thoroughly to remove any soap residue.
Dry completely: Let the bottle air dry completely before using it again.
Check the lid: Don’t forget to wash the lid and any other parts of the bottle that come into contact with your mouth.
If you use your bottle for other beverages besides water, it’s important to clean it more frequently. For example, if you use your bottle for sugary drinks or milk, you should clean it after each use to prevent the buildup of residue.