No they won't spin right. Take the cover off and wash it but don't dry it it will shrink. I would wash them buy hand and hang them up to dry. If they get messed up in the washer kinda hard to replace. It would be best if you knew someone with a carpet cleaner or rent one from a store. Good luck!
I would assume you could, they have all sizes of washers. I used a triple loader.
Thanks! Your answer is awaiting moderation.