I have used them. I caught a bobcat that had killed 14 birds one night. And another time a fox that had dug under a gate and killed several birds. Even though we are rural some of the land owners are selling off parcels of their land and we have had several new houses go up and most have pets. I have caught some in my live traps so I quit using the foot/leg traps. I'm constantly getting offers for some of my land but I'm not selling any.
Thinking back to the electric fence. Was it grounded? Was all the grass trimmed away from it? If you didn’t have a ground wire or keep grass and weeds from touching it, it wouldn’t be effective. The plants cause a “dead short”. It’s like they absorb all of the electricity and it doesn’t go to the fence.