I don't know of anyone that has used the "Burglar Bomb" products but I'm tempted to incorporate a couple into my alarm system.

If you haven't heard of them look here http://www.stopthecrime.com/prod-repulsar4.htm
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"There is not a man of us who does not at times need a helping hand to be stretched out to him, and then shame upon him who will not stretch out the helping hand to his brother." -Theodore Roosevelt