The owner, lessee or occupant of property abutting on any street shall keep the sidewalk adjacent thereto in a clean and sanitary condition and free from snow, ice, dirt or refuse. In the event the owner, lessee or occupant of any property shall fail to keep the sidewalk adjacent to such property in a clean and sanitary condition and free from snow, ice, dirt or refuse the Mayor is hereby empowered and authorized to give notice to such property owner, lessee or occupant to clean such sidewalk of snow, ice, dirt or refuse and to put such sidewalk in a clean and sanitary condition, such notice to be served as provided by Section 913.08, and upon the failure or neglect of such property owner, lessee or occupant to put such sidewalk in a clean and sanitary condition and to remove snow, ice, dirt or refuse therefrom within twenty-four hours, excluding Sunday, after such notice has been given, the Mayor may cause the same to be done and the cost thereof shall be assessed against such property and become a lien upon such property in the manner provided by Section 913.09.