you both mentioned why you should be using it. you saw a buck bumpin doe's,but you know its to early. one of the keys to using scents[specially estrus] is you are trying to fool a buck. why you should be using it is you want that buck to think your scent is the first doe in the area to come into cycle. i started using estrus yesterday[wed evening]. why is i had 3 bucks come by my stand wed morning following a doe. the first one had his nose glued to her butt. the bucks are ready,but the doe's aren't,fool that nose into thinking there is a doe in heat and he'll come on a string. if you really want to get creative. use a doe decoy with estrus around it and sit back and watch the action. can be awesome at times.