Do chickens HAVE to have one? I have a small one right now that they use. It has sand and pine shavings in it (all mom would buy was sand, so that's what I had) So my questions are: Is a kitty litter box big enough? Can I put it in there run, because right now it's taking up their nest box spot (only 9 weeks old as of today) What should be in there? How often do I clean it? What importance is it to them? They have a box, but still scratch up grass and dust in it, why? Any other advice?