Dominant buck urine is a way for mature bucks to claim their territory and will attract other bucks to the area. Use during pre-rut and rut can lure dominant bucks in the area to cruise through more often in rival of their territory. When used in combination with doe estrous in the Rut Rouserâ„¢ Dual Mister, it becomes a powerful attractant. The high quality synthetic Dominant Buck Urine scent cartridge is 2.5 fluid ounces (75ml) and sealed with a screw-on cap that can be reused to cap the cartridge for storage. The cartridge is mess-free, easy to install, and is interchangeable while on the hunt. For easy at-a-glance recognition, the cartridge is clearly labeled with the name of the contents. Each of the Hunter`s KloakÂ® scent cartridges last approximately 4.5 hours and can be used in the Hunter`s KloakÂ® Gen 2 Kloak Mister or the Rut Rouserâ„¢ Dual Mister.