Have an idea, that because I don't have any I can't prove it. When I was young, The local farmers pais my cousin and I to shoot groundhogs in thier fields. I noticed then when going out in the Am (Freshly shaven) That the hunting was not as good as when we stopped by after a day of fishing. Also there is a tip, that after corn has pollinated, to place a couple drops of cheap perfume or after shave around the ears. Thought -- If one was to get some real cheap perfume or after shave. take the top off and place around the border of a garden or property would it keep them away? Make a small cover to keep rain out place high enough so stuff could still evaporate. Byron