Vroom Vroom! Does the sound of the garbage truck coming down the street send your kids running to watch? Do they dream of grabbing a ride? Earth Day kicks off city yard open houses and recycling fair season, and these events are hugely popular with kids of a certain age. More than 6,000 residents attend an open house in an average year. If your kiddos have any curiosity about what goes on in a garbage truck, this is their chance to satisfy it.