i do lol and sometimes the 12 gauges but most of the time my .22 gets to see most of the action, but if i were you id just kill them they are a pest to anyone, they dig holes that catttle and horses can get there legs stuck in and break their leg, they destroy farmers crops just really a big pain in the butt. As for the skulls that could also be from a golpher that had been shot by someone and the other golphers eating them right by their holes cause they tend to drag the dead body right by their holes so if danger approaches they dont have far to got to hide but they wont bring it in the hole cause they also tend to be neat freaks, they like a clean den.