I keep them on 1-1/2" coco husk, that's the coarse stuff, with several layers of bark and leaves on top. I add enough water each week to keep the coco moist. This creates a nice moisture gradient, stays dry up top. They stick tons of ooths between the bark in the lower layer near the moist coco and the little ones like to hang out there too. The larger nymphs and adults prefer the upper layers. I keep it right around 80 deg F and they are breeding like crazy! So much so that I'm considering moving them to a cooler area. They are eating hardwood leaves, apple, various squash, and I occasionally put in a small dish of dog food, sometimes gets eaten and other times not at all. The apple and squash are devoured readily though.