No sign shall be maintained which advertises a business which is no longer conducted or a product which is no longer sold. Any person who leases or owns a sign shall remove such sign within thirty (30) days after cessation of the business or discontinuing sale of an advertised product. The sign structure portion of such sign may remain until a new business occupant or a new product is offered if the sign structure is maintained as provided by section 15.50.500. (Ord. 3698 §3, 2022)