Based on what some are willing to do around here with words alone, I'm glad they don't believe in more lethal weapons. Those prone to violent reactions prompted by unpredictable rage should NOT carry weapons.

Having had personal experience with spraying paint directly into my eyes, (Don't ask - it would make some of Cletus & Paw's escapades look intelligent.) I doubt it would help much with a home intruder. It might work (as would any distracting but non-disabling type of counterattack) if you were in a situation to run away after spraying. For one thing, the person can't see, so they're not going to be able to get out of your house. For another, you have to get close enough to them to spray - bad if they can grab you. For a third, the paint doesn't completely blind a person - they can see where you are in between blinks.