No person shall encumber any street or sidewalk. No owner, occupant, or person having the care of any building or lot of land, bordering on any street or sidewalk, shall permit it to be encumbered with barrels, boxes, cans, articles, or substances of any kind, so as to interfere with the free and unobstructed use thereof.
Penalty, see § 91.99
Cross-reference:
Littering on streets or sidewalks, see Ch. 94