You might think there's no wrong way to use a garbage bag: open it up, tuck it in, and toss your trash. But, as it turns out, most people have (maybe?) been making a basic mistake this entire time.

Every week, Concord’s purple trash bags are placed at the end of driveways, with varied opinions of the residents who place them there. For some, the cost is difficult to stomach. And for others, it ...