just to add a little to what bernie said, when you add the beer or whiskey to the corn. You can add some sugar which will give the yeast something to feed on in order to ferment. I have had some very good experiences with the diesel/used motor oil. The ONLY purpose that I have ever seen this for is that the hogs rub on it and the oil helps keep insects away from them. Some guys land what I hunt on set a 4x4 post in the ground and then wrap barbed wire around it. Then they pour diesel or used motor oil on the post. It's unbelieveable how much they use this thing. It wasn't 2 days after the first time that we did it, and then all the barbed wire was completely covered in hair.

The other thing that I have found to work even better than corn is wheat seed. We didn't know if it would work or not, but we scattered out a 5 gallon bucket in some short dead grass. The next evening (28 hours later) the whole area looked like a gym floor. There wasn't 1 piece of wheat anywhere and the grass was even gone. It looked like they used a hoover to suck everything up.

Good luck.