The local country elec. co-op folks tell me they have a HUGE problem with pigs rubbing against creosote power poles. The tar helps with their tick/lice parasite load. I have seen poles on ranches that have been rubbed almost to the point of failure about thigh high from hogs.
Yeah that’s a problem here as well. We look for the poles with the highest rubs we can find LOL! Tall pig= big SOB!