Code Blue Drop Time Combo is our Whitetail Doe Urine combined with the Drop Time Deer Scent Dispenser. This creates an effective way to draw in big bucks, especially in the early deer hunting season. The dispenser releases the deer scent either in 20-minute intervals or at dawn and dusk. All you have to do is pour the doe urine into the Drop Time Dispenser, program it, and walk away. This timed-release mechanism allows you to leave the deer scent dispenser and climb into your deer hunting stand. Meanwhile, the hunting scent will cover up your human scent, keeping your presence hidden. With the deer scent dispenser, you get multiple applications of doe urine without the hassle of multiple trips. Research indicates that each deer has a scent all its own that is contained in and spread by its urine and other secretions. Other deer use this scent to tell if another deer has been in a particular area. Every bottle of Code Blue deer attractant features the secretions of just one deer. This eliminates the chance that you will use the same scent as your neighbors out in the field. And when bucks get a whiff of Code Blue doe urine, you can rest assured that they're not getting the scent of many different does. You can be extra sure, since each bottle includes the registration number of the deer from which the bottle was collected. That number is certified as authentic and from one deer by an independent organization. Patent Pending