[Brian]

I kept mine on paper towel for the first few weeks. Anyway I saw a pic of a T roborowskii hole and it was in hardpan basically.

[ptenopus]

sand is a must for teratoscincus. Or packed dirt. I use the Fine zoo-med sand or you can drive to NV and get some. Put a few inches down and soak the hell out it. Put a 100w spot above it and there ya go.....hardpacked sand ready for diggin! Dont get the washed sand because the dust is what packs together. mixing dirt and fine sand works great too.

[Brian]

I've been wondering ever since I saw a picture of the roborowski hole in a old Sauria article. It seems to be in hardpan type clay dirt.