Compost Week is an intensive, week-long behavior change campaign designed to rapidly increase composting participation and build a lasting culture of food scrap diversion on campuses, workplaces, and community sites.

The campaign combines education, public commitments, gamification, and highly visible volunteer engagement to create a critical mass of awareness and action around composting.

Throughout the week, volunteers dressed in humorous vegetable costumes take shifts at waste stations, creating a memorable point-of-disposal intervention where sorting decisions are actually made.

Participants learn how food waste sent to landfill generates methane emissions and are invited to publicly pledge their commitment to composting by adding their name to a visible community commitment board.

Those who participate receive an "I Promised to Put It in the Compost" badge, reinforcing a pro-compost identity and creating a powerful public signal of their commitment.

The campaign draws on some of the strongest principles in behavioral science, including commitment devices, public pledges, social norms, identity formation, salience, and novelty.

By making composting highly visible, social, and memorable for a concentrated period of time, Compost Week is designed to create a tipping point in awareness and participation that continues long after the campaign ends.