Dead Down Wind™ uses enzymes - a natural catalyst for change. They break down odors at a molecular level, a process we call Enzyme ScentPrevent® or ESP. The use of enzymes allows Dead Down Wind™ products to eliminate a wider range of odors. We call this technology 3D+ Broad Spectrum. While some might have you believe the only thing you need to concern yourself with is bacteria related to perspiration, that is simply not the case. Hunters carry many foreign odors to the field that can alert whitetail or other big game animals. The science behind a big game animal's nose will tell you it's looking for any telltale odor that might give them an idea of who or what is in the area. That's why we specifically formulate for a broad range of odor control, not just one type of bacteria.