Mineral Spirits - whew
Finaly got the floor squeek fixed in the master br (the really annoying one) so I was able to finish up the sanding for that room.
Matthew got to help a bit with the hand sander and then the vacuum a bit on this project, as well as dump out the box of nails. Once all that was done I was able to wipe down the floor with the stinky mineral spirits in prep for the polyurethane.