Burglar Blaster

Alarm systems are great and all, but if you really want to scare any prospective robber away as possible, install a Burglar Blaster ($600). This self-contained, battery-powered unit is simple to install, and uses a passive infrared detection system to sense when an intruder is near. After the set entry time delay, it blasts four ounces of irritating OC pepper spray into the surrounding area, virtually guaranteeing a quick retreat for anyone in its path. Good for up to 2,000 square feet, it's likely more than enough to protect your home — but if you feel the need for extra firepower, step up to the Decintegrator, which fires out six times as much of the nasty stuff.

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