In my current setup I dont use one. The leos can dig down in the substrate to reach areas of higher moisture as needed. I used to use cypress mulch in the humidity hides when i did use them though.
i use the moss here. Btw what do you guys use for a moist hide? i know many people, including me just use old tupperware and stuff but it seems like such an eyesore and it throws off the whole look of the terrarium. Anyone got a cheaper alternative? Or am i doomed to always use a land-o-lakes container....
Plastic kleenex box covers are inexpensive and have a lot of different designs on them. I found some that have bamboo designs on them, and they already have a opening made in the top.