Carb cleaner is GREAT self defense spray! True story: A while back I stopped at a yard sale. There were quite a few old tools and such for sale, like at most rural Michigan yard sales. I was checking out an old hatchet when the home owner, a gent in his '70s or maybe even early 80s saw me looking at it. He mentioned that he had a double headed version of the same hatchet he kept in his night stand for protection. I made a comment to the effect that he was too nice a guy and I kept a loaded 3 inch magnum 12 gauge shotgun by my nightstand. He shook his head and said, 'Nope, no shotgun for me, my friend. The fight doesn't last long enough'. Did I mention that we have a fairly low crime rate out here?