We don't own a hair salon or anything, but we do own three dogs so the Eye-vac has been a great investment for us.  We have wood floors and this is a great way to help keep all the dog hair swept up.  I wish I had one for every room in the house!  It works pretty well.  We have it sitting by the front door and it doesn't suck up the snow-melt salt that gets tracked into the house, but other than that it seems to work well on everything else.