Last year, as I was sitting in a ground blind, I spotted a group of does about 70 yards away from me. I blew on my buck grunt tube just to see what they would do...It was like I yanked a rope around them, they all came running toward me like a tornado. Running in circles and right in to where I sat, but never stopped. They returned to their original spot and I grunted again, same thing happened. It was like they were wanting this buck they heard to start chasing them. This happened 3 times in a row before they got frustrated and left the area. I think every deer can be called if the timing is right, and you make just the right sound at the right time.