If you mace or bear spray a perp in your house you will suffer as bad as the hypothetical home invader. Bad plan. Loaded gun in house filled with kids, bad plan. Best bet really is to avoid bad actors. Seems like most Anchorage "home invasions" are by people who know the home and it's occupants and are really about sex, drugs and/or money related to that house and it's occupants. Random home invasions are not nearly as common but do occur. So do earthquakes and meteor strikes. Walk in beauty not in fear.