Burrow-able non-allergic bedding for a corn?

[kilopular]

aspen sani chips might be better for your nose. I have a pueblan milk snake on the stuff. There doesn't seem to be the saw dust and tree dander that comes with any sort of shredded or shaved aspen.

Reptibark
cypress mulch
eco earth(ground coconut husk)- people do use this, but I didn't care for it.

Is the aspen sani chips the "Lizard Litter" I see at petsmart/petco? It kinda looks like that, anyway. It's the looser stuff, right?

I've never heard of using reptibark for corns, it seems like she wouldn't be able to burrow very well in that stuff.

Thanks for the response! I definitely don't want to go the mulch or eco earth route, that stuff is too intense.