So phresh bedding / Aspen or Soft wood

I know both aspen and pine are safe.
I tried both aspen and soft wood ( natural blend of pine and other shavings ) from so phresh adding to paper bedding.

I used to use only paper bedding but they eat it so now I mix it with wood bedding. They chew and eat wood bedding too but I feel like wood is safer than paper.

I liked the aspen one because the soft wood one is very light and fly away, however you can see a picture of chin on only soft wood one, not on aspen one.
And I think I read this...

So phresh bedding / Aspen or Soft wood