Vanishing hunter by Hawgslimited buckfever synthetics might be the only scent eliminator spray that I have heard of that can and is recommended to use in your mouth. My brother (below) and I use it on every whitetail bowhunt by spraying down and always spray it in my mouth, swish it around and it leaves your mouth clean and scent free.
www.hawgslimited.com Kevins products work
