Can anyone who uses electrified offset wire low on the outside of the fence to keep predators away tell me where they get the wire from (companies?) and how exactly to use it? Also, how effective has it been? thanks! Based on a couple of things the first responder said, let me add a couple of things: 1. This is for chicken protection in an area with smaller predators, like fox, dogs, raccoons (not bobcats and bears) 2. This is also more for protection against digging predators.