Modern sports industry offers nowadays a wide range of plastic sports drinking bottles for runners and cyclists. Sports caps prevent spills and splashes. Such sports drinking bottles are easy in use, but they are very difficult to clean, especially the sports cap.
To wash a sports drinking bottle, fill the bottle with some baking soda and hot water solution. One teaspoon of baking soda for a glass of water is enough. Put a sports cap in open mode, and place the cap into solution. Shake the sports cap and leave it for 30-45 minutes. Rinse thoroughly. Dry the bottle upright.