Do you mean CareFresh?
If so, then it's safe for hedgehogs. But I have to say, it's extremely messy and gets everywhere. One of my hedgies came with that in her cage and weeks after we had switched to fleece and flannel I would still find blue things all over the house.
And I find it a little dusty too.
I recommend fleece liners for the cage and Yesterday's News or paper towel in the litter box.