Buck Bomb Doe 'N Estrus Igniter contains 100 percent urine that is collected from does during the peak of the estrus cycle. Igniter Doe 'N Estrus urine will boost the drawing power of your mock scrapes, particularly during the peak of the rut. The easy-to-use dropper bottle contains four ounces of premium, potent Doe 'N Estrus liquid urine attractant.