Wildlife Research Center Pro-Drag Combo/Trail's End #307 Buck Lure - 1oz - Trail’s End #307 is the hottest performing Buck Lure you can use. It contains Whitetail Doe Urine with Estrus Secretions, Extremely Attractive Oils derived from plants, and other ingredients (not known or used by most scent companies, but highly attractive to deer). The Hottest Performing Pre-rut Buck Lure You Can Use During The Rut, #307 Stands Alone. It Has Been Reported To Bring In Rutting Bucks That Were Following Behind A Doe When A Buck Smells It, He’ll Come In Extremely Effective, All Season & Rut