I tried this quite a bit when I started hunting but only had luck on 2 occasions. It wasnt real good luck either one deer being a spike and the other believe it or not being a doe. The spike was with a rattle bag and the doe was with a real set of antlers. I just did a few 30 sec to 1 min sessions about every 30 min. Other then that no luck with them. I still carry a rattle bag and try once in awhile but not much. I think it works best in areas where the buck ratio is high.