I lost the place where someone was asking how to get stains out of dresden plate blocks. (remember, I'm new). Recently I went looking for something to clean up my wedding dress jacket which I had just put in tissue, and stored 25 YEARS ago. It is satin ribbon & lace. I found a product called "Sharon's Solutions". I e-mailed a question to the site, and 10 minutes later my phone rang, and this nice owner answered my question, talked at length, she works out of her home. I'm sorry to say I haven't worked with it yet, another WIP, but check the sight out, it may help you.
www.sharonssolutions.com