Hunters trying to bag a buck faster and easier are the reason urine farming can be so lucrative. A bag of deer urine to lure hunters’ prey, costs about $4-$10 and the website DeerFarmer.com estimates the market is worth $18 million per year. It also says one deer can urinate enough to gross from $93,440 to $303,680. In order to be successful, a urine farmer must account for seasonal changes in output; there is a lot more urine to be had in hot months than in cold. The Collora family in Iowa has been urine farming since 1990. They now have 130 deer and elk that pee onto a grated floor to be collected and bottled below. One product, called Mrs. Doe Pee’s Special Blend is harvested during mating season and is ripe with hormones, and a four ounce bottle goes for $25.