Dead Down Wind - Evolve field spray, our newest enzyme technology that prevents and terminates a broader spectrum of odor molecules including human, smoke, gas, and other synthetic contaminant odors. It is the last line of defense against any alarming contaminant scent a hunter may acquire before and during the hunt. The sprayer is an inverted technology that will allow you to hold the field spray bottle upside down and spray out the product until the bottle is empty. Shake well before using. Field spray offers new enzyme technology that prevents and terminates a broader spectrum of odor molecules.; Last line of defense against any alarming contaminant scent a hunter may acquire before and during the hunt. ; Inverted sprayer technology allows;