very cool pic , your rub is carpet ? , do you put oil on it or what ? please explain , is it a attractant ?
When i used to make em I would use old carpet soaked in used motor oil, i would wrap it around a good tree near a wallow and wrap chicken wire around it to hold it in place. The hogs at the old place i used to do this at started using them almost immediately and would hit em just about everytime they hit their wallows, i have 1000's of old trail cam pics on one of my mini broken laptops, if i ever get it fixed ill try to post some pics.