Ok...it has been a while now...and we are down to bare dirt. I am fine with it as it is easy for me to rack up the dried poop and toss it. I do this daily. Should I be providing something for the girls to walk on and scratch at besides bare dirt? We do have a 20" x 20" sand box for the girls. Is it ok to just give them bare dirt? We have two hawks in the tree next door, so letting them out at the moment is not an option.