They are in different enclosures. The substrate is coco bark...has been since they have been in my possession. Don't know if that is good or bad, but it is the same from when she ate her first 2 meals. She uses both of her hides and seems to be comfortable in them. I am feeding her f/t rat pups. She is only 179g she was 165g when I got her 2 months ago, so she isn't loosing weight just refusing for the last month.