Good Ol triple-cleaned whole corn will work the best in a Feeder and hopefully it won't clog up?Put down a salt or mineral block also to help draw the Deer in also.I have tried the small 4 or 5lb Apple-flavored mineral blocks (size of a brick) and the Deer love it,they are easier to pack out into the woods and once they disapate into the ground the Deer will still paw and eat at it!