I dealt with a room of 768 square meters. ft. that doesn't have access to the attic that needs rewiring, so I spent several months stripping the insulation. I made a homemade insulating vacuum with a dust collector for the docks when I went to town to remove drywall. I started with a white cheap quality bag. It leaked. His hole wasn't reinforced, so it ripped. When I moved this thing I had to vacuum the insulation because it was all over the place. After this experience I tried it. I've passed 3 so far and these are my praises: 1. Really low dust. The insulation stays in the pockets and when I move it I don't get dusty.2. Reinforced opening that is safe and perfect for hoses3. High quality and will not tear when moving. If you need to solve this unpleasant task, you are here!