I have used corn both ways on the cob and shelled. They both work well, I have never had a problem w/deer carrying the cobs off. In my area the deer eat the corn so fast that mold isn' t an issue, but if it was I have a cheap and easy solution. Go and buy a 35 gal. rubbermaid trashcan and cut 4 or 5 1" triangles at the bottom. Put it out where you want it, fill it up, and tie the lid down. If you don' t tie the lid, coons and deer will knock it off. Has worked for me the last 4 years and it is easier and cheaper than all the other feeders. It holds about 200-300 lbs. of shelled corn.