Sauber is a collection of different and personally approved recipes for cleaning agents, that can easily be done at home with everyday ingredients like lemon juice or vinegar. The products are all 100% natural and are not harmful to the environment.
Plus, the book itself is designed as a cleaning sponge. It is printed on a special paper, that is resistant to water and to most chemical contents of various products. The front cover is a silkprinted abrasive sponge while the back cover is made of a common yellow sponge. This way the book itself can be used just like any other sponge and can be easily washed afterwards. Once it is dry, it is as good as new.