My neighbor had Guineas and I was really happy when they got rid of them. During deer season, I couldn't hear the deer walking thru the woods, they are that noisy! I had a stand approx. 300 Yds from the Guineas tho.
They got rid of them because they wanted some peace and quiet at the house, they orig. were the kids 4-H project.
Hogs will eat snakes as well, but I think they will do more damage than good.