So far this is the DIY project I dislike the most. Removing tons of loose styrofoam from my attic. Only doing part of it for now to get access above a bathroom that we’re remodeling. Eventually I’ll remove all of it, seal the air gaps, and probably replace the insulation with blown in cellulose.
The the insulation vacuum bags definitely make it easier.
Sympathies from a fellow attic-renovator. Currently my wife and I are trying to insulate our attic with styrofoam and the stuff just crumbles away while moving the sheets.
Good luck with your project, I would love to hear an update about the blow cellulose! Great idea with the vacuum by the way!