A lot swept clean at four in the morning, salt laid down in a fine even scatter, and by the time the first car turns in off Hartford Avenue the pavement is dark and dry — that is the work. SiteScapes Inc. handles snow and ice management for homes and businesses across Rhode Island, along with landscape management, spring and fall clean-ups, and sprinkler systems ranging from drip lines and pop-up emitters to wifi-run controllers, plus commercial irrigation and landscape lighting. Johnston is a town of stone walls and old mill villages folded into the low hills west of Providence, where the Pocasset runs shallow under the road and farm fields still open behind the tree line out toward Snake Den. In July the zones get set so the green holds through the dry weeks; in January the sky over Route 6 gets read at midnight and the trucks roll before anyone is awake. What's left behind is plain enough to overlook, which is the point — a lawn keeping its color, a bed raked down to bare soil in November, a driveway you can cross without thinking about it.