I seem to be doing a good job of picking up the nails my roofer missed whiile cleaning up the yard when he was finished. I picked up a nail in the tire of the wagon I use to haul firewood.........and the ATV used to tow the wagon..........and now my lawnmower.
Perhaps I should drive the cars and ride the bicycle through the yard to get a nail in those tires as well.
I'm waiting to get one in my foot.