Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Do NOT vacuum even slightly damp stuff with this bag!!

Don't vacuum anything even slightly damp with this bag in the vac. It WILL fall apart. Not made to deal with moisture. I think Fein says not to use this bag with the hepa filter, but I do anyway. I don't see how it would stop all the small dust otherwise because it does leak some around the edges of the rubber gasket that slips over the nozzle inside the vac. That means some of the dust you are vacuuming gets caught in the hepa filter, which is the last defense as far as dust getting into the air.I do love my Fein though.