At such time as there is in force a contract entered into by the city and any person or entity for the collecting and removal of garbage, rubbish and waste matter in the city, it shall be unlawful for any person or entity other than the contractor having such contract, or his employees, to collect within the city, dispose of or transport, carry or convey through the streets, alleys, or public thoroughfares of the city, any garbage, rubbish, waste matter or other matter offensive to the sight, or to interfere in any manner with any receptacles or garbage containers, or to remove such receptacles or containers after they are placed by the lessees or owners thereof. This shall not prevent individual residents of the city (city to be the city limits as they exist on June 30, 1988, including newly-annexed Morgan Ranch area) from collecting, removing, or transporting their own garbage, rubbish and waste matter, but shall not allow such resident to provide such services for pay. (Prior code § 11-14)