Get the attention of mature elk bulls in your favorite hunting spot with Hunter's Specialties Wayne Carlton's Calls Cow Elk Estrus Urine. This attractant consists of pure elk urine taken from receptive cows, giving you a scent sure to distract and drive mature bulls crazy. Bottle's atomizer produces an ultra-fine mist that floats on the air to peak the interest of rutting bulls. 2 oz. bottle. Manufacturer model #: 70400. Powerful natural attractant for mature, rutting bull elk Pure elk urine taken from receptive cows Bottle's atomizer produces an ultra-fine mist that floats on the air