I had same problems across board recently. Fence tweaking and better release of dogs resolved although second fox still probes. Pretty certain more than one second fox operating in area; they are hard to tell apart.Good luck catching a fox in a live trap. It can be done but they are weary.
I had a live bird in this trap secured so nothing could get it and the fox knew it but wouldn't go inside but tried to dig under the trap. I see a fox most every night on one of my game cameras. I did catch this one in leg traps eventually but an other moved in to take it's place.
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