I've tried repti-bark, habi-chips, aspen, coconut and that new carefresh bedding. I've gone back to aspen. I really dislike the carefresh. It doesn't lay flat and tends to clump and I found that it got in the water dishes all the time. The repti-bark and coconut were fine, but hard to see poop in, especially the tiny ones the hatchlings make. The habi-chips were fine, but they are very small pieces and I was afraid they would ingest while burrowing or something. So, overall, I've liked the aspen best. The snakes seem to really like it for burrowing, and it looks nice too.