I'm not sure if this is definitely the right place to post but... I am wondering about this because my ds is moving to a big boy bed very shortly. He still has night time accidents 1-2 times a week. I refuse to put him back in a diaper even at night. He wears cloth night training pants which don't keep him dry at all. I need to protect the very expensive, natural mattress he will be using obviously. Does a wool puddle pad make sense if it will need to be washed 1-2 times a week? I also found a waterproof bed pad made by Kushies. The waterproof layer is vinyl coated but the company assures me that it is BPA, pthalate, and lead free. It is also much less expensive than the wool pad. Any thoughts or suggestions? Thanks!