I worked for five summers on Radcliffe Parks Department and one of the jobs was to cut the grass on the verges and open areas of council estates. I had a large self-driven machine with a clutch and cutters at the front. Generally you could spot the fresh dog turds and steer round them, but once they'd sunk in for a few days and got grass growing round them they were a nightmare. The worst were the old ones that had dried up after a few days without rain. When you hit one of those it exploded into a puff of dust. You had to hope the wind wasn't in your direction. And don't get me started on those stupid leads that can expand to about twenty yards long, stretched across the path in front of you like a deadly booby trap. Make 'em illegal!