Perimeter Trip Wire and Bang Alarm ...For Under $5

Living through a zombie apocalypse is hard enough while you're awake.  Now imagine trying to get a good night's sleep, knowing that in any moment, your camp might be visited by an unwelcome guest who's sniffing out a quick meal.
Well, here are two very inexpensive ways to ensure that you won't be caught by surprise...

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-K.H. Danielsen