Pure Whitetail's Ultra Premium Doe Estrous is 4 ounces of 100% pure estrous urine from a single doe in heat. Pure Whitetail urine is fresh, never frozen, contains no additives or preservatives, and is never held over from the previous season. The urine used is collected from Pure Whitetail’s own deer farm in Middletown, OH. Our herd is State Certified CWD Free. Ultra Premium Doe Estrous is a deer scent that should be used during the pre-rut and rut phases in scrapes and around your hunting area. Use on Pure Whitetail flexible scent wicks (Flex Wicks) and drag lines, such as Pure Whitetail’s Last Track. Drive rutting bucks crazy as they scent check scrapes and known doe travel corridors and bedding areas and search for the hot doe ready to be bred.