With crime up the way it is you may want to carry some pepper spray along with you especially if you're out at night alone. You can make your own homemade pepper spray with a few household items. You hear that criminals watch out we got just what you don't want. Look here for more information: http://www.metacafe.com/watch/889244/make_pepper_spray_homemade_teargas/
To make pepper spray at home combine 2 tablespoons hot red pepper, rubbing alcohol and baby oil. Carefully pour the liquid into a spray bottle. Remember that pepper spray should only be used as a self defense tool.