The mark consists of the configuration of a generally rectangular container having wider front and rear upright walls, shorter upright sidewalls and a lower bottom walls, and open at the top, provided with relatively small wheels at the lower edge of the rear upright wall and telescoping handle extending upwardly from an upper edge of the rear upright wall, small actuate splash guards essentially covering the tops of the wheels and the lateral sides of the wheels facing the opposing front upright wall and provided with an array of symmetrically arranged, generally rectangular indentations and/or rectangular openings in the front and rear upright walls.