"For seven years and counting, Orbit gum's reason to believe has been that it cleans up a dirty mouth," says Energy BBDO CD Frank Dattalo. Wrigley's Orbit gum apparently even works on sewer breath, at least while the ground stays dry. "Looking to tell the story in a surprising way, we hired local artist Karen Tisel to hand-draw portraits around dirty objects found on the streets of Chicago," he explains. But it turns out each piece requires about six hours of work, which can really grate on you. "I definitely had more skin on my knuckles when I started,” laughs Tisel. The Windy City pitched in as well, supplying police for crowd control, and for a friendly final touch, environmentally safe children's chalk was used for the portraits — which, alas, "washed off after the first rain," says Dattalo.