Mass. Gen. Laws ch. 94 § 48
Whoever himself or by his servant or agent having custody of any vessel used as a container for milk intended for sale, places or causes or permits to be placed therein offal, swill, kerosene, vegetable matter or any article other than milk, skimmed milk, buttermilk, cream, other wholesale products in which dairy products constitute the major portion thereof, food products approved by the commissioner of public health for use in such vessel or water or other agent used for cleaning said vessel, or sends, ships, returns or delivers, or causes or permits to be sent, shipped, returned or delivered to any producer of milk any vessel used as a container for milk and containing any offal, swill, kerosene, vegetable matter or other offensive material, shall be punished by a fine of not more than ten dollars for each such vessel.
Mass. Gen. Laws ch. 94, § 48