I bought eco-earth as a substrate. I used it slightly moist but its drying up now especially above the uth. A couple of days later I notice my snake trying to burrow and I was scared it will go into her nose or mouth. So I took some of the substrate out of the warm side and placed ripped up crumbled bits of brown paper(the kind for sack lunches) and she started burrowing in it! I wonder, should I keep using the paper or buy aspen?