I bought one for when my mouse had babies. I still have it and it gets passed from cage to cage...I switch cages around a lot. For the most part they don't chew it. There are a few little nibbles here and there like they taste tested it.
My mice completely cover it with their bedding to plug up the holes...I guess they don't like when the light shines in.
I saw at petsmart that they have an even smaller size. From the looks it'll only be good for a dwarf hamster or a single mouse.