Back in the day we used diesel soaked corn (keeps varmints from corn) and then poured s ome on some old cut telephone poles we posted so the hogs could rub. Be warned if Game Warden finds you using diesel they will fine you due to enviromental impact.
Now a days we use jello with 2Qts water and soak the corn. You can use mase, sour corn, donuts, fruits, regular corn, hell you name it and they will come to it.
The first thing to remember they have to be around. If you search the net for "hog pipe" they work great and super cheap...... limit the holes to 2-3 and the hogs will be there until there is no feed left. I put a spacer in my endcap to install fruit and powdered jello to keep them coming back when the pipe is empty.