In the the 15th and 17th Centuries, gong farmers dug out human wastes from privies and cesspits. This job no longer exists, but the term GONG FARMER could be useful online!
“Gong was Old English for both the fecal matter and medieval toilet repository, itself. Gong farmers were to work only at night. They emptied a castle’s collective cesspit every two years, but also accepted payment for individual privies, as well. They toiled for two shillings per ton — centuries before indoor plumbing arrived"