when I first bought my BP,it came with the enclosure and the aspen. I kept that same aspen for three months. The BP presses it tight and gives it a very attractive compacted bedding look. (great look!)
I spot cleaned and added more aspen as needed during those three months.
When I started feeding some f/t food, however, I used hot water to thaw. This made the food wet. Some pieces of aspen got eaten (with no ill-effect). I didn't like the fact that aspen stuck to wet food (sometimes dry food, too). I didn't care to take the snake out to feed, so I switched to newspaper for all my snakeys. Now the food can be as wet or as dry as I want to be and no aspen shavings get eaten.
I think aspen is fine. I just prefer newspaper. I am too lazy to take the snakey out of the enclosure to feed. The few times I tried to take out of enclosure, I didn't get a feeding response (of course, maybe taking out of enclosure had nothting to do with the no appetite, shrug.).
I just htink newspaper is easier, overall. It is readily available and cost nothing.
cheers.
p.s. please have a pleasant aspen-filled Day!
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Longtang. I like snakes and rats.