As the sun returns so does the visibility of winter dirt and dust on windows, shelves and buildings. In a land of ice, there is an enourmous effort to distribute sand and salt so that cars and people travel safely. And so the cycle continues until spring: new snow, new ice, new sand, new salt, new snow, new ice etc. A layer cake of dirt that eventually gets dragged inside. Hey, I just came up with the lamest joke ever: If Dustin Hoffman ever needs a new job, he can be our Dust-It Off-Man.