In my part of the world hog calls are money makers. They don't work but they still sell. In my opinion the best "call" for a hog is soured corn with a dash of Jello and diesel for extra flavoring. I don't make them to really sell. Feral hogs were once domesticated and even though they have been in the wild for quite a few years they still have not developed the instincts of hunting for food. They use their nose to find food. With that said I have turned down a small fortune by not selling hog calls. Go to any area sporting good store and you will find they sell them, and they sell a lot of them.The commercial calls use a JC reed, I think it is the LV002, but not sure on that. Others use a reed set up like the deer grunt calls use. When I get frustrated with listening to the "expert" hog hunters that demand a hog call from me I give them a cottontail distress. charge them twice the price and the suggestion that they hunt over soured corn with a dash of Jello and diesel. This way they have the hogs coming in for the food and they have their call.By the way, strawberry Jello seems to work the best.