It shall be the duty of any plumber, electrician, carpenter, or other workmen who shall do any repair or other work upon any building required by this subchapter to be ratproof or rat-free where the same has been so made ratproof or rat-free in compliance with this subchapter, and shall, in the course of the work or repair, interfere with the ratproof or rat-free condition of the building, to forthwith restore the building upon which the work or repair has been done, to its former ratproof or rat-free condition.
('64 Code, § 22-4)