I used to buy hog mineral in sacks at the feed store. Remember to bring my Excalibur crossbow as well. They were cheap, and the deer ate them up. I put it out after deer season when the weather got nasty, and the deer tore it up. I haven't put any out in a long time; it used to be legal, but due to CWD, it is now forbidden (I believe the law is still in effect).