Trail&';s End #307 with Scent Reflex Technology is the hottest performing Pre-Rut lure you can use. It has been reported to bring in rutting bucks that were following behind a doe. Extremely Effective, All Season & Rut. 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).