Cigarette butts are the main haul in a Saturday sweep in Porter Square as part of an organized cleanup. (Photo: Tom Meek)

If the T plaza at Porter Square and the stretch of Massachusetts Avenue north and south of it looks a bit trimmer and neater, thank the Porter Square Neighborhood Association, Porter Square Shopping Center owner Gravestar, the Massachusetts Bay Transit Authority, a smattering of area residents and 15 or so students from Harvard who threw in a part of their Day of Service. The “Porter Square and Mass Ave Clean Up!” organized by the association kicked off Saturday with about 30 volunteers broken into teams to weed, sweep and pick up trash along the corridor over four hours. Gravestar and the city donated tools and trash bags, and coffee and doughnuts were provided for those lending sweat and sinew. (For volunteers, the bane of the cigarette butt far outweighed that of the resilient reed.)

The MBTA and Gravestar have promised power washing and window cleaning follow-ups, association organizer Ruth Ryals said.