I keep two in a 4x4inch container with a shallow sub...just use man made hides and it works just as good...if you give them too much substrate they will kill a cricket, drag into hole eat it and then you will have a big problem with leftovers :-/
I have several (read as full broods) in tanks with shallow sub. I just provide plenty of hides. i do this for the exact reason tabor mentioned. They drag food into a burrow, don't finiush it and then you have a mite explosion to deal with.