I had not 1 but 2 experiences with these vile black walnut tree droppings yesterday. (1) on a jog through the park I rolled my ankle on one of these tennis ball wannabes so bad that my ankle touched the ground. (2) One of my kids picked up a different one of these green inconveniences and got the black goo and maggots all over the place, with no means to wipe or wash hands in sight! I could personally do without the black walnut tree refuse.