employment in any activity in contravention of a notice served on him under this regulation; or (b) knowingly employ any other person in contravention of a notice served on that other person under this regulation. 29 Places of manufacture, storage, and sale No person shall use any place or permit any place to be used for or in connection with the sale of any medicine, related product, or cosmetic, or the manufacture, storage, or packing of any medicine, related product, or cosmetic for sale, unless the place complies with the following requirements: (a) the place shall be kept adequately lighted by daylight or artificial light, as the circumstances require, at all times when any work is being carried out there: (b) the place shall be kept appropriately ventilated at all times while any medicine, related product, or cosmetic, or any container or material for the packing of any medicine, related product, or cosmetic, is present there: (c) if a waste liquid is produced there, the place shall be provided with a means of drainage that is sufficient for the removal of the waste liquid, and that is kept in good, clean, working order and condition: (d) the place shall be kept, so far as is practicable, clean and free from foul odours and free from dust and creatures likely to contaminate the medicine, related product, or cosmetic: (e) the walls, floors, ceilings, and roofs shall be properly constructed and kept in good repair, and shall be easy to clean: (f)