This document summarizes a study on improving recycling participation among renters in multi-family dwellings in Pittsburgh. It finds that 39% of Pittsburgh residents live in multi-unit housing but recycling participation is lower for renters than owners. Barriers include lack of space, cooperation, and information. Surveys found renters and those unaware of schedules recycled less. Recommendations include improving the recycling website, collecting data to assess buildings, developing landlord-tenant action plans, and establishing a recycling ambassador program.