I have used it in the past and found it to be a little too harsh for the piggies' feet. I even tried the "soft' variety. It would probably be ok for the kitchen or potty area, but I would not favor it for the entire cage. It also scatters like crazy.
Yes, we bought some today as it's for the litter, kitchen area. The aspen shavings were everywhere. We haven't put it there yet as we are using up the critter care first.