I know deer can smell. I know when your bowhunting your going to be close to the deer. What I don't know is if scent away and other scent killing products honestly make a difference. I use it sometimes, but I was not wearing it when I killed all 4 of my deer so far.. Do you guys think its necessary? How many times do you spray it on you? Please reply and include any other info on scent away or tips that you think might be helpful.