Ive tried this system few years ago. nothing new about it and used in the states as a drown system for otter, beaver and even mink in foot holds.. some use them for coyote also to get the captive out of sight as in ditch etc near roads.. i had twp foxes in them. one was it said on the tin ,20 ft out from the fence,,, the second was wrapped up in wire.. they work one way .. so saying a for hits the fence in the direction the cable is set out ,,,, or line wire etc he should go under fence run with snare then at the end of the road come to a stop with no return ... in ideal world maybe..... t