Just a suggestion you can also landscape and build planters around your runs and coops.It prevents large animals from getting down close to the wire and digging underneath them.Cheaper than burying so much wire and more effective.My planters come out another foot and are over a foot tall filled with garden soil.Lay hardware cloth down on the ground before you make them.Now I'm thinking I should double up and use both! Haha. I have only used hardware cloth in the past, but my run had a wooden floor (chickens free ranged most of the day, so they were only in it for an hour or two in the morning really). It was kind of a throw-together thing when I inherited some chicks from a relative. I saw coyotes try to get into it many nights, but I feel like the fox is smarter? Plus, our current fox population is very tame. They will walk right up while I'm outside feeding my ducks in broad daylight.