The sidewalks and streets must be clean. Rats eating out of overflowing trashcans are not a good look, and not reassuring to outdoor diners, much less people on the street. Absentee landlords are the worst offenders. They must be majorly fined. Next worst are the abandoned storefronts, where the supers think they are no longer responsible, many storeowners are also flouters, refusing to clean around their storefronts.