While I respect everyone's right to approach their responsibility for self defense as they see fit, Just be sure you think through what happens after employing a Tazer or OC spray. A civilian Tazer gives a 30 second window, where you either need to capitalize on the situation or get away. After that you have a fully functional, probably pretty annoyed bad guy. If you haven't restrained the person, or run away, your situation likely is worse. The reason I mentioned this is I think these are really inappropriate tools for people who are not capable of outrunning their attacker (older or disabled people for example).