It is unlawful and a nuisance, subject to abatement by the police department, for any person or entity to bring onto or place on any residential area, or to allow to be kept thereon, such materials whether on wheels or in place, which of their very nature will have a known physical detrimental effect upon the human senses and general well-being of the people residing in such area. This shall exclude the normal collection of garbage, rubbish and waste matter in the exercise of the contract as city garbage collector provided the collection is done in a sanitary manner and in full compliance with the terms and conditions of the contract. (Prior code § 11-4)