Cleaning your reusable silicone water bottle regularly is important to prevent the retention of odors and flavors. 

Here are some steps you can take to clean your collapsible silicone water bottles with straw:

1.Rinse the silicone foldable water bottle: After each use, rinse the silicone bottle with warm water to remove any remaining liquid or residue.

2.Use soap: Use a mild soap and warm water to clean the bottle. You can use a bottle brush to scrub the inside of the bottle to ensure that all surfaces are cleaned.

3.Rinse thoroughly: Once the collapsible silicone water bottle is clean, rinse it thoroughly with warm water to remove any soap residue.

4.Dry the collapsible water bottle: Allow the bottle to air dry completely before storing it. You can also use a clean cloth to dry the bottle if necessary.

5.Clean the cap and spout: Don't forget to clean the cap and spout of the bottle as well. Use a bottle brush or a small brush to clean these areas thoroughly.

6.Use vinegar: If your silicone collapsible water bottle has developed an odor, you can try soaking it in a solution of equal parts water and white vinegar for a few hours. Rinse thoroughly with warm water afterwards.

7.Avoid certain liquids: To prevent odors from developing in the first place, avoid storing liquids that are known to have strong odors, such as coffee or tea, for long periods of time.

By following these cleaning tips, you can help prevent your fold water bottle collapsible from retaining odors and flavors, and keep it clean and fresh for longer.