Every wagon, cart or vehicle used in the work of collecting and disposing of garbage and rubbish shall be kept clean on both the inside and outside, and all such vehicles shall have metallic or metal-lined beds or metal containers, shall be watertight and equipped with proper covers so that the garbage shall not be offensive, and the garbage shall be loaded so that none of it shall fall, drop or spill upon the ground, and shall be protected from wind and rain. (Ord. 117 § 17, 1972)