I would not put that in my wahser for fear that something would happen and all those beads get into my plumbing system.
However, just a thought..... 3 yrs ago I bought a beautiful Coach tote purse in WHITE. I always wondered how I'd keep it clean. Well, I pulled it out for this year and I just told hubby it is too nasty looking to use.
I was going to put it in the wash...what's to lose, right?
Before I was going to do that, I talked to my dry cleaner and was told $45 to Start cleaning and price goes up. Well, I only paid $140 for it and I was not going to pay $100 to clean it.
So, I went to the coach outlet, they said wet wipes which I laughed because that's what I've done.
Now, my point, before I put it in the washer, hubby asked to try to clean it with the hose attachment on our Bissell carpet cleaner for the steps and upholstery. I put a little of my HE detergent and a little clorox for the solution.
It LOOKS BRAND NEW. While it was wet, I put in in the direct sun.
Just an oddball idea that might work for you...