I notice that my girl likes to dig in the corner of her cage right around the time I shut her lights off. She quits after a while but I know they love to burrow. Is there a way to crate some sort of deep area like a sand box she can dig in to remedy this craving. I just feel bad that she reaches the bottom so fast and is just scarping the side. I though of maybe getting a kiddie pool and filling it with substrate or sandbox sand and let her dig holes etc. Since the substrate does not stick together to make tunnels etc.