Anonymous, i certainly hope that you are not using cedar. If you use it, please, go to http://www.trifl.org/medical.shtml and in the side bar select the section on cedar and pine. Cedar is always dangerous. Pine is more a matter of allergies for some, but these can be severe and even fatal for those individuals. Most ferrets show no signs of having troubles from it, but some can becomes severely ill very rapidly. We use pine pellets ourselves wihtout problems but I know a few people with ferrets allergic to it, including one of a vet. [Posted in FML issue 4136]