Every three months or so, Stanley cleans the lint out of the long vent to his clothes dryer. It is a messy job that Stanley hates. It is too bad that Stanley has never heard of the Casabella Bendable Dryer Vent Brush, a specially designed brush that would make his life a little easier. For Stanley, the dryer vent brush is a(n) _____ product because he doesn’t know the product exists.