+ How should I clean my straws properly?
We recommend that you clean the straws thoroughly immediately after use with the brush provided. If there are dried residues (e.g. from a smoothie) in your drinking straw, first soak it in rinsing water and then use the brush for thorough cleaning. Otherwise a round in the dishwasher will do.
https://ecobrotbox.de/en/frequently-asked-questions/care-cleaning/how-should-i-clean-my-straws-properly