Just an FYI. my cousin works for Louisiana Wildlife and Fishery Department. It is ILLEGAL to trap, wound or kill red foxes in this state. Most don't know that, but its a huge fine and possibility of jailtime though usually just a chunk of community service which MAY include some type of financial restitution to the state. Foxes are considered part of the Louisiana Fur Trade and are therefore protected. You can't trap them safely and remove them from the area, you can't wound them in any way, and you can't kill them EVER! Same thing with buzzards and crows. Just be careful. Usually, right to protect your livestock law applies, but not where red foxes are concerned.
Course, what my fellow chicken raisers and I say in my area..."IF I SHOOT AND KILL THEN BURY, AND NO ONE SEES....DID IT HAPPEN?" Not that I am admitting anything... but I can say, for some reason, that my rifle and shotgun skills have greatly improved in the last 2 years...by land or air....
Only way you can legally harm a red fox is if it is attacking your child or yourself! You have to just sit there and watch as they haul off your livestock or pet.....seem INSANE to me... cause for me, that ain't happening!