My suggestion would be to see if there are any wildlife rescues. I would personally catch the fox and eliminate them but that is me. Maybe you can catch them and see if a wildlife rescue would take them. I had an issue with an owl. I caught it and the wildlife rescue here took it and said they had a release area and it shouldn't come back. It killed some of my birds. For the fox, I put out live traps and let the fox take the bait for a few days then set the trap and caught it. Good luck for whatever you decide...