Badgers tend to have a big kickout of soil or sand, and bedding such as dried grass in the enterence coz billy changes bedding to minimise fleas and ticks, also look for latrines or as us northers call them shit pits.... more often than not hair gets snagged up on stone or roots at the mouth to a hole, and well worn runs directly to the sette.... as far as finding billy in fox earths is concerned, not much u can do about that, iv also found badgers in pipes, bales, rock piles and under an old pumping station.... accidents are sumtimes unavoidable, hope that helps