Grave Digger™ Buck Urine's scent stays strong regardless of weather conditions and is specifically designed to resist moisture and freezing. This powerful combination is packaged in a heavy duty bag with an airtight seal locking in freshness. Once opened, the TRS (Time Released Scent) fills the woods with enticing scent of hot doe that lasts up to 30 days. This eliminates the need to re-visit scrape sites thus preventing contamination by human odor. 8 oz. (1/2 lb.)