All enclosures where animals or fowl are kept shall be kept clean and free from all filth at all times. All manure shall be cleaned regularly and kept in a separate receptacle, properly covered, which shall be removed at least twice a week or whenever directed by the animal control officer or other official of the city. Each enclosure shall be sprayed with a suitable residual spray as often as necessary to control flies and other insects. (2000 Code § 4-104; amd. Ord. 1065, 1-8-2008, eff. 2-7-2008)