The Silencer can take your loudest cough and turn it into a faint whisper totally undetectable just a few yards away. It's easy to imagine the application this invention could have while hunting or observing wildlife. It goes unsaid, animals have extremely superior hearing, and some of the slightest sounds in a quiet woods can be enough to alert a deer or turkey to one's presence. A cough is much more than a slight sound. Test have shown that hunters can hear each other coughing at over 500 yards apart under the right conditions. Imagine how far an elk could hear that same cough - Maybe three to four times that distance.