I built my first chicken tractor for my daughter's 3 hens with the intentions of getting them out of a fenced in run and on some fresh grass (I have a large yard). The only problem is that these three hens are tearing the grass up down to the dirt in less than a day. I was hoping to only have to move them every couple of days. I haven't covered the bottom with hardware cloth yet. I am wondering if that will help prevent them from completely destroying the grass (or at least slow them down some)? Thanks!