So.......I thought that I had read just about every book or article on raising chickens when I stumbled upon someone talking about their chickens "bathing in sand"! I thought I was giving the girls everything they needed..appearently I am a bad mom. How do I set up this "sand spa"? Do I just pour play sand in an area? Do I get a kind of tub and fill it with sand? Is it any kind of sand or play sand? My 12 week old Australorpes thank you for making their life nicer!