How are you planning to clean out the demi-john when the plants have expired?
That is the most frequent question I recieve whenever I show my video to friends and family
![biggrin :D](https://chat.allotment-garden.org/Smileys/green/biggrin.gif)
. And my answer is, I do not know :_D. I guess I will see how far it grows and I will work it out then and there =)