We have been very effective at "thinning" out the hog population through a combination of trapping and hunting, with of course the cooperation of the land owners in the area. Not only did they not charge anything, they gave us corn and even paid for some of our fuel and time. But, we were effective with visible results, eliminating over 1,000 hogs from the area had a tremendous positive impact for the farmers, and they were definitely appreciative. But, like what has been mentioned on this thread above, I would not pay anyone to kill a pest, it takes a lot of work and there are a lot of sleepless night to be effective at nuisance animal removal, it's like having a second full time job and most aren't willing to put that much into it.