It shall be unlawful for any person owning or having custody or control of any dog to knowingly or through failure to exercise due care or control, permit such dog to defecate and allow such excrement to thereafter remain in excess of five (5) minutes, in any public park, upon the sidewalk or parkway of any street, or upon any private property which is improved or occupied without the consent of the owner or occupant thereof. (Ord. 973, 2-20-1990)