I was walking our dog down some fields near Porthcawl last winter, the took a shit and as I went to bag it a guy shouted across to me to leave it there, I thought he was having me on and continued to pick it up, had a chat and turned out he was the farmer said next time leave your shit in the fields it is good for land!

Obviously this was privately owned farm land, but never thought about it in that way before.