I have a large bag of aspen bedding that I bought for my rat's litter box but I don't use it anymore(they were getting it everywhere and it is just easier for cleanup without them.) So I was wondering if I could get a plastic bin and fill it halfway with aspen and treats and put that in the cage, changing it pretty often? It has a pretty strong woody smell which is why im not sure. It should be safe but would the smell be too much? I am trying to use it up as it is a huge bag and takes up a lot of room but don't want to throw it away.