It is unlawful for any person to throw, place, deposit or leave or cause to be thrown, placed, deposited or left in any of the public streets, sidewalks, alleys, parks or thoroughfares in the city, any dirt, filth, sewage, sweepings, excrement, compost, papers, garbage, stable manure, boxes, ashes, lumber, coal, wood, kindling, grass, weeds, vegetables, slops or litter of any kind, except in approved containers. (Prior code § 14-305)