The source for many is a company called Mosser Lee. You can buy from them online. Check them out, they sell in bales if need be. Honestly lots of my snakes don't use their hide boxes. So frustrating sometimes. This season though I am two for two on using next boxes.

go figure.
-----
================================
www.richcrowleyreptiles.com
Support your local herp society
www.chicagoherp.org