Richard,

I had one that worked well enough. Solar, ParMak I believe. 6000v (?) or so, the bear didn't like it much.

Fish and Game guy did caution me that once a bear has gotten to the goodies (beehive in my case) the fence might not turn it. Worked for me though.

Good luck with it.

Geno

The desert is a true treasure for him who seeks refuge from men and the evil of men.
In it is contentment
In it is death and all you seek
(Quoted from "The Bleeding of the Stone" Ibrahim Al-Koni)

member of the cabal of dysfunctional squirrels?