Since 2000 i've spent thousands of hours hunting, trapping and just observing wild hogs. Hunted and shot 2-3 hundred hogs and trapped a few hundred more.
There is this thing about wildlife departments and wild hogs. A few states are having success in reducing wild hog populations. One would assume that other states would mimic their success. You would be wrong because a government bureaucracy is always on the lookout for reasons to expand. They "study" the wild hog problem until the situation is out of control, then hire trappers and helicopters to shoot hogs.
The idea that shooting hogs will cause them to "spread' is wacky. After shooting a hog or two from a group (they're called sounders), the hogs disperse and then get together again. One primary reason hogs in Canada and the US are spreading is because Bubba wants to hunt hogs close to home and hauls in some hogs. The other primary reason for the spreading of wild hogs is the hog hunting ranches.
In Oklahoma hogs are an invasive species. Control of wild hogs is the responsibility of the OK Dep't. of Agriculture. A few years ago new rules came into effect. Transportation of wild hogs for release became a felony.
Hog trappers who transport live hogs to hog hunting ranches and meat processors must be licensed.
The wild hog transporter must have a transportation permit for each trip. Each permit has the time and place of departure and destination and is good for only 24 hours. Each hunter at hog hunting ranches charged $25. No more hog hunting ranches will be licensed, some have closed shop.
At our property north of Elmore City i've greatly reduced the wild hog population by baiting and shooting little pigs with #4 buckshot from a tree stand overlooking the feeder. This spring i killed about 50. A neighbor killed 40-50 more.
Dead pigs don't become hogs. Tree stand is in the tree behind the feeder.