Tim, In the popular Ferret Hard Cover, " A Practical Guide to Ferret Care"(Jeans,1994), It states that ANY wood derivative can cause potential respiratory problems. Your not alone though, I have even seen many Pet Shops, use wood chip bedding products- which goes to show how grey and miscommunicated of an area it is. Enjoy. Anthony Agliata Ferret Dude [log in to unmask] [Posted in FML issue 1076]