I guess the first thing to remember is, don't get killed by leathal ammo while you have non-lethal. Also non-lethal can kill and severaly injure. Would you be better off with OC spray and a baseball bat ? I'll leave the lawsuit end of this to those that are more qualified than I am.I suppose the Taser would also be an alternative. I'm not sure about the range that non-lethal ammo is non-leathal, inside a living room might be too close.