Our estrous scent is collected from does that are in-heat, and we use a proven hormone therapy similar to processes used in artificial breeding. We can scientifically pinpoint the does' receptiveness to breeding, which allows us collect samples at the peak of their breeding readiness. One whiff will make a buck go wild, and a small amount can go a long way. Please note that we only accept pre-orders for this product, which is shipped immediately after collection.