A squirrel got inside the fence perimeter. I told him I didn't think it really got past the electric fence, that there is at least one squirrel's nest in the tree back there, that I'm aware of. Playing back the video, it climbed from the nest, down the tree, onto a limb that is close to the roof of the coop, and jumped onto the roof, then climbed down. Dh was looking at fencers with a higher output. I just shook my head at him, and had to explain, it's a deterrent, a training device, NOT a taser, or an electric chair. Sheesh.