I'm not drawing the conclusion from the substrate they use but rather they have stated that the scaleless BP are able to get cut more easily, which they recommended to not feed them live or have sharp things in the cage. I was drawing the conclusion from they stated their more susceptible to being cut and also they haven't tried anything other than newspaper (Because it's the cheapest) so they might be unaware that aspen could be possibly to sharp for them. I've recently moved to aspen and my BP seems to avoid going on the ground (He's a month old hatchling and most of his life he has been raised on paper). He hangs and climbs all over his hides ever since i put the aspen in his cage (His hides are rather tall and i put some geode rocks in with him to decorate and give him stuff to play with), I'm not sure he's just inhibiting his natural instinct to raise his head to view and watch for prey even though i fed him 2 days ago. I would recommend geode rocks they don't seem to get a lot of mention for cages, their insanely cheap and they are heavy enough to not get knocked over and can be climbed on. Last night my BP tho spent most of his time on top of his basking spot hide and i know for a fact his temperatures are perfectly fine so he's choosing to go on top on his own. I just thought it was abnormal because shouldn't he be digesting at the moment and desiring to go inside his warm hide? Unless he's now viewing the 2 rocks on top of his hide as a separate hide because their close to the roof, otherwise i'm baffled why he's acting this way unless he doesn't like the substrate. Maybe it's because he's finally shedding (he had i can only assume retained his shed because he had blue eyes when i got him and it's been about 4 weeks with no shed) and now he is starting to rip parts of his shed on his belly and various other places. His cage never drops below 70% and usually stays in the high 70's and never past 80%. Your opinion would be very useful for this.