The best way to reduce the hog poulation is by trapping. For years i hunted and shot hogs; they just kept on multiplying. Finally started trapping hogs two years ago. We have greatly reduced the number of hogs on two of our properties and another place i hunt.
Yesterday morning we had four sows in a portable trap. We had removed three sows from that trap the day before. This made a dent in the future hog population of that place.