Do you have predators in the area? If yes, will chicken wire be enough to stop them? Dogs can rip through it without too much difficulty. You may want to consider a second layer of stronger fencing. I have my run set up with 2 layers of fencing. I have 2"x4" field fencing on the outside of the 4x4 posts, and 1/2" hardware wire on the inside of the posts. So far, nothing has been able to get in. I have had raccoons and bobcats try, and they bent up the outer fencing a bit, but nothing has been able to touch or get through the inner fencing.