Hi everyone! I recently got a pair of Pekin ducks as new pets for my daughters. But I made the terrible mistake of putting cedar shavings on his bed, just like I saw on TSC. I found out they are toxic like pine, according to what I have read, they are currently breathing heavily and maybe because of that. So, at this moment I do not know what to put on them, they are still at home, I calculate them between 3 and 4 weeks. What base can I use for them?