I have used a fabric shaver on mine. It's just a cheap one that runs on batteries. I used to use the same thing for upkeep on my berets while in the service.
I have always tempered my killing with respect for the game pursued. I see the animal not only as a target but as a living creature with more freedom than I will ever have. I take that life if I can, with regret as well as joy, and with the sure knowledge that nature's ways of fang and claw or exposure and starvation are a far crueler fate than I bestow. - Fred Bear