ORIGINAL: cayugad
That radio thing actually works a person told me. I knew a person that used to take a portable radio out in the woods, tune into the ball game or what ever, set that on a stump and then go off about 50 yards or so, and watch the area. He CLAIMS he always saw deer sneaking around the outskirts of the perimeter of that radio trying to see what was there. Of course they walked right by him in doing so.
As crazy as it sounds, it does work. My dad's best friend killed deer every year by doing that. Only difference was he sat the radio right beside him. Deer are very curious creatures.