Like everybody said, ok as bedding, but not as absorbing. Also, like corncob, tends to mold if it gets too much humidty. Here, aspen is hard to find and what you usually get is pine and cedar, so if I don't find aspen, I buy hay (any kind, as long as it's mold, pests and insecticide free) and some cheap toilet paper (I get a pack of 4 rolls for $1 at the dollar store). I shred the TP and mix it with the hay (about half and half), and use it as bedding. They usually pick out some TP pieces and build a nest with it, but the TP makes it more absorbent, and the hay more odor free (even though they still get smelly, not as smelly like with only TP).