I set out three on 640 acres back in late July. All three had cameras aimed at them and all three were over existing scrapes from the previous years (several). Interesting results. At first I had lots of doe visits and few bucks. By late September all three had mature buck visits, sometimes multiple mature bucks. Most of the time more than one buck was in the picture. Several times pics were of immature bucks locking horns. Most interesting was the scrapes were never opened, even to this day. New ones were made close by. While hunting I only observed small bucks make stops. Its something I will continue to experiment with. I think Gene nailed the fact you will at least know whats in your area.