HCA: Hermit Crab Association

When I got 2 hermit crabs 2 months ago one went down to molt that night and the other would haft dig and just sleep then eat at night and then dig a 1 inch. Hole again, she stopped doing it but sometimes does it by the heater because she's cold, 3 weeks ago I got another because the molter died of P...

I recently discovered I have cholla wood in my backyard laying around the Cactus it came from, what I'm wondering is, is it safe to use for my hermit crabs. I know about pesticides and we do spray but haven't since last summer and it has rained alot since and just rained this morning along with our ...