Brian, The only one I use is Code Blue Doe in Estrous. I use it during pre-rut and rut. I have consistently had bucks come in and sniff the pad or the ground where I put it. I put about half a bottle on a scent pad about three feet off the ground and then sprinkle the rest on the ground in about a ten foot line perpendicular to the wind direction. Sometimes, when the rut is just starting and bucks are wandering around looking for does, I will put out two or three setups(bottles) in different areas around my stand. The directions say to use several drops on a scent pad but I use the whole bottle on one setup. Besides, when was the last time you saw a doe only pee several drops? In my mind, the more scent I use, the better chance I have of a buck smelling it and coming to investigate. Allen