My cat had a bladder infection not to long ago, and as a result he peed on anything and everything. I got most of the stains out with that Woolite Pet Stain Remover. However, he peed on my favorite down comforter. I took it to the dry cleaners, and they said it would be around $50!! I was thinking I could look for a coupon, but... Any ideas on how to get it clean?