How do you want it to work? I don't get it. ??
Say you are not around. You left the fake corn and deer come upon it while you are gone. If they are around corn, then they will know or think they know what it is. They walk up to it, maybe give it a sniff or just pick it up. Right then the jig is up and they most likely won't get fooled again.
Now the fake corn is out there. Either you placed the corn and left it or you just set it down right now before your hunt. A deer sees it and goes to investigate. However, if a deer is close enough to see the corn on the ground, then theoretically, if the corn were NOT there, he's there anyway... within shooting distance of where you are. So then the corn really didn't matter.
Now if you are bowhunting or using a gun, perhaps setting the fake corn in a strategic position to offer the shot you're looking for while he stops, then that would be an advantage and use for it.
Since several states do not allow baiting of deer, it's an alternate. There might be some info out there if someone wanted to make their own fake corn though.
Have fun out there!
iSnipe