In game units where natural cervid urine is no longer in use, Code Blue Synthetic Buck and Doe Urine is the logical deer attractant to use. Code Blue Synthetic Buck Urine has been scientifically formulated to replicate the potent smell of natural buck or doe urine. Unlike real urine however, synthetic buck or doe urine does not breakdown and become ineffective with age. Use synthetic urine with mock scrapes, active scrapes or with scent drags and scent wicks, from pre-rut all through peak rut. Does not contain deer urine. Size: 1-oz. bottle. Available: Buck, Doe. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Baits & Lures.