Our chinchilla died several months ago (we had her for over 19 years, so it wasn't a surprise). I think we're ready now to get another chinchilla and I plan to use the old cage. I was planning to clean it really well, but not sure I can really clean the wooden ledges. Are chinchillas sensitive to other chins smells such that the old wooden ledges would be a problem? I was originally going to purchase new ones but my husband doesn't think it's necessary and doesn't want me to spend the money on it. Thoughts?