That's a great heads-up! We do recommend here that folks don't use pine shaving because reptiles can react to the pitch/sap of pine. If it is possible that this particular brand of aspen can contain pine particles, while our reptiles are probably still safe, it is definitely something we should all be aware of. Thanks for the post!

Incidentally, I have a pair of sugar gliders and while I, and most of us in the community, use fleece, some folks do use aspen at the bottom of their gliders' cages. I will pass this along in the glider community too if its ok with you...