Mine only free range when we can watch them. Occassionally we might run in the house for a minute, but we try to always have an eye on them. I have a small red coffe can (plastic) which they know has scratch in it. I start shaking and calling, "here chook, chook" and they run and fly for the coop. Once in a while one will be difficult and I have to get the "red broom of power" which is obviously a red broom which I use to direct who ever is being unruly, but I rarely have to do that. (I don't hit them ever, I just point it and sweep at them). Besides predators, I watch them because my garden is a huge source of entertainment for them.....good for them, but hard on my plants. Chickens are so funny, having them out while we do our chores make chores more fun.