I got this from my nephew who is on the swat team in ft. Lauderdale. Get yourself several cans of wasp and hornet spray and keep them stratigicly placed around your house, i keep one in my center console of my van. You can blast someone from 35 feet away and i guarrantee you he will start screaming and fall to the ground, as you retrieve your 12 gauge. It will actually have no permenent damgage, and it is not considered a weapon by the pd. But it works!