I put up an electric fence around my vegetable garden to keep moose at bay. It's worked well for years. I put in a solid ground around the perimeter. An eight foot ground rod at every corner, looped together with #4 copper and that's tied to the buzz box. Fence strands are 12" apart and they're all hot. The only problem I've had is that they were able to push through the aluminum wire and break it before the shock deterred them. Replaced the aluminum with stainless steel wire and haven't had moose in the garden again. BTW- because the "ground" is at the fence perimeter and not alternating hot/earth strands on the fence, any wire touched is a shocker. And it's a real jolter after a rain or in the morning dew.