Update
So, I found the trap (we had lent it to someone), and I set it using a dead chicken and some small pieces of fruit. Covered it with hay to make it look a little less like a trap. I also got all camoed up and sat out till after dark to see if I could shoot the dang thing. No luck. If the trap doesn't work I'm going to try calling it in with a pup distress call. It's open season on foxes year round here in PA.