How to clean water bottles?
Baking Soda (this cleans and removes odors) and 150ml of vinegar (which kills mold and mildew germs) in the bottle. Fizzing will occur. Allow the mixture to settle for 5 minutes. Leaving the vinegar and baking soda mix inside the bottle, use a brush or cloth to clean inside the bottle making sure you don’t miss the groves and corners. Replace lid and squirt out the contents to clean the nozzle. Then rinse the bottle out several times with warm water.
Tip for cleaning narrow neck or long bottles: Some water bottles, especially SIGG liter bottles, have a narrow opening and long body making them more difficult to clean. That’s where a bottle brush can help. Use the vinegar and soda mix, then use the brush for at least 30 seconds, rinse out the bottle and brush, fill with hot water and repeat.