Moisture sensitive billboard. Bottle trigger compresses and water is spayed onto billboard; while it is wet background is a clean white, when it dries it looks dirty again.

Bus shelter / bird feeder. Bus shelter's ad copy talks about the dangerous contaminates birds can leave on food, and the bird feeder attracts live birds to complete the message.

Bus shelter / bird feeder. Bus shelter's ad copy talks about the dangerous contaminates birds can leave on food, and the bird feeder attracts live birds to complete the message.