A very controversial subject. You could get many varying opinions on it. It really all depends on the part of the country you are in, north, south, east, west, the weather conditions for that year, whether it is an early or late rut, and of course how agressive or passive you are in calling.

On an early season bow hunt in 2005 in south Ne. It was last light of the day, and I hadn't seen the 2 bucks that I had seen every other time I had scouted the property. I was in a blind, sandwiched into a row of round bales, on an alfalfa field. I was getting ready to pack my gear to go, when I decided to take one last look. The two bucks had come in from the south and were headed north to me, up the row of hay bales, slowly grazing the way along. They were only 30 yds from me, but I had no shot due to the hay bale next to me. Losing light fast, and over anxious to get them to me sooner, I gave a short grunt. OMG, those 2 bucks took off like they were shot out of a cannon. lol I don't even carry a grunt with me since that time. If I need to, I can do a good enough grunt to stop a buck, or whistle or yell. lol They all work. I will carry a doe bleat though.