Re: Collateral damage on bear fences?
Here is a link to my flicker picks with pics of a constructed fence as well as a diagram and supply list. It should help in getting what you need and how to properly install a fence.
I live in the mountains of Colorado. Needless to say, a fence is a must and the DOW requires it for commercial yards if you want to file a loss claim. A couple of things, these fences run on impulse chargers, so unlike the movies where someone grabs a fence and stands there getting shocked, these pulse so that you can release the fence if you grab it. I have never seen any kind of animal killed by this type of fence but they do work and keep the bears out. Second, I read about volts, amps, etc. With fences it's the joules that determine how much of a kick it is going to have. Additionally, the length of the fence from the charger and your ground will also affect it's effectiveness.
I like this charger with the solar panel included. http://www.amazon.com/Parmak-Impedan.../dp/B00099FAJI
If you are close to a house a 110 charger is cheaper.
Hope that helps.
Life is tough, but it's tougher when you're stupid.” John Wayne