Get rid of artificial products in the kitchen and use natural alternatives. Coconut fiber brushes are tough on dirt yet gentle on surfaces. You can use them not only for cleaning glasses and mugs but also as an integral part of caring for your eco-friendly bottle.
It is simply the perfect helper in your kitchen, replacing plastic brushes. The coconut fiber brush does not retain dirt and is resistant to bacteria and odors.
Note that it has a wider end, so it is not suitable for bottles with a narrower neck (e.g., ReTap).