A heavily used wallow can ruin watering holes for other wildlife and livestock. However, areas like this one are good places to hunt hogs during hot summer months. Rubs are generally made as the result of wallowing and are most often associated with wallows. The purpose of rubbing is for the hog to scratch and remove dried mud, hair and parasites. Hogs will use just about anything on which to rub, including trees, fence posts, rocks and power poles.
Feral hogs seem to have a preference for rubbing on creosote treated posts.
Rubs are most easily found during the summer and fall months. Another indicator of the presence of feral hogs is scat. Scat is simply a technical term for droppings. Like tracks, hog scats are usually shorter lived and are harder to identify or confirm than other sign. Hog scat can look similar to dog in shape and consistency.