Mark, well you have NOW. The posters above are right on target in their comments too.
I will say that in my situation, I haven't seen a fox on any of my trailcams for around 9 years now BUT I AM LOADED WITH YOTES AND SEVERAL OF THEM LOOK MORE LIKE WOLVES IN SIZE. I surely don't know if it is completely true but I've always heard that when there are lots of yotes as it is in my case, the foxes will move elsewhere.