I have heard of all the above scent breaking methods and even heard that if you put deer scent on their noses before the hunt that they wont fool with them either. In my opinion the best way to break them is work them on hogs, then take them deer hunting with tri tronics, then take them and put them back on hogs as fast as you can. Be sure to praise them for the hogs and scold them for the deer. I dont recomend breaking them off of deer before they are running hogs first. If they continue to bump deer make sure they are wet when you take them hunting for deer the second time!
Joey Young