If you want to speed up the fermenting add some sugar. This is what I found works for me. Let the corn sour and dump it out there they will find it. I use this after setting up a new feeder. It attracts the hogs, they find the feeder and keep coming back. The one thing I found that does make a negative difference is changing things at my feeder. If I add a new oder like coolaid or that store bought hog juice the hogs wont come in that day. Once I set things up I leave it alone, I only use strait corn and it works fine. You will go nuts trying everyones "secret" formula here.