No one's too small to be a help! Humus farming stands for biodiversity, and even snails their place there - especially if they are round and silvery (because, incidentally, in Swiss German, a snail refers to a piece of 4 Swiss franks : ) If you throw 5 CHF into the pot, we will email you a humus-rich wallpaper as a thank you, which you can install with just a few clicks.