There is a store in St. Louis, MO called The Container Store(they are on line) and they have a product made of lava rocks. They are amazing. It can take animal smell out of a garage. They are reusable and can be revitalized every 8 mo. or so. They are $10 a bag. I would purchase this product put the jelly roll in a plastic bag with the lava rocks(they are in a mesh bag) for a few days and it should come out fresh or even just lay them on top of the lava rocks. They are well worth the shipping and cost. I have several bags I use. Good luck.