Followed this thread from the 'Cleaning LPs' thread.

I think SussexCarole is brave to admit to using urine as a compost accelerator. A recent 'Gardeners Question Time' couldn't get any of the ladies present to admit to using it, though about half the men were happy to. Maybe something to do with the differing mechanics or geometry of the procedure.

Also, I've heard that on sailing ships, the crew washed their dungarees by soaking them in a communal urine barrel (apart from those with certain diseases), and then towing them behind the ship for a while.