Is it stable enough to wash? They make a product called color catchers. They go in the washer. I don't think I would be brave enough to machine wash it. You might try filling up your bathtub and soaking it. But you have to be careful to not wring it. Just gently smash the water out then wrap it in towels to soak up the excess. I would suggest letting it air dry out in the yard on top of an old sheet...good luck...