Oh and those deer sprays and other repellants.... we've tried the really icky ones that smell like rotten egg and putrified garlic because those are the ingredients.... hmmmm they might work if you spray the repellant on a dog and sic the dog on the deer. Mainly the spray stinks up the yard and the garage and your hands. The deer don't particularly like the taste but they have tasted (as in biting off and spitting out) every bud on our day lilies just in case one didn't have the rotten egg/garlic gunk on it.
We've read about motion sensors that will turn on a light, doubt it will work with these guys. Motion sensors that turn on a sprinkler - might work once or twice to get them to walk a few yards away. Gordon has even tried a pellet gun, but they have learned that it will sting but only for a moment, so they wait for it and then wander off. The only place they haven't bothered our plants is on our second floor deck and in the house. Waiting for the day we come home and several are sitting in the deck chairs while another is in the house gathering goodies for the gang. Given half a chance I think they just might go for it.