Oh...another idea that might work for you better...let them out to range a couple hour b4 roosting/thier bedtime. That way..they will only have a couple hours out and won't go to far. You can plant some really nice chicken grazing spots around your coop to...there are mixes of grass seed u can plant/buy specifically for chickens. Plant ur chicken grazing area on the opposite side of ur yard away from the irresponsible dog neighbor. Hens live nice fresh baby plants to munch on. So..by planting a chicken grazing area and letting them out a few hrs in late afternoon you will be able to free range them some but keep them safer