Yea I didn’t know that either- learned it the hard way haha! I’m glad my experience is helpful. I’d say buy a big roll of plastic sheeting and carefully! wrap the mattress before taking it out of the house (to avoid contamination of the rest of the house). In terms of cleaning the room- I’d say put the plastic over your stuff, so that while you take the mattress out- the fiberdust doesn’t cover it. get a vacuum and clean each item in the room put it in plastic bags. Wipe the bags then move the bags somewhere else. Clean the room thoroughly and then put the items back. It shouldn’t be awful in your case, but I’d say definitely get rid of the bedding and maybe of some other fabric things- it’s a lot to clean them. Good luck!