corn. Sour, fresh, dried,etc. etc. I like to dig holes with posthole diggers as deep as i can, fill half full with corn, add a pack of dry strawberry jello, then top of the hole. The hogs will come dig at the holes for days. The jello will add that extra punch to the corn that will really get the hogs coming. Others fill the holes with sour corn. I found that corn with jello works as well and you dont have to deal with nasty, sour corn. Sour wheat works as well.