The distribution of in-unit bins, the dissemination of customized and multilingual educational materials, onsite information sessions, outdoor advertising, public art initiatives, and infrastructure add-ons such as restrictive lids resulted in a decline in categories of recycling contaminants. When comparing the post intervention data with the baseline, in properties with recycling dumpsters as well as those with recycling carts, there was an improvement in the quality of recycling.
In addition to carrying out the pre and post intervention audits, a recycling composition study was carried out, to quantify the weight of recyclable materials and contaminants before and after some type of intervention. In the property selected to carry out the study, the bins were distributed, educational materials were distributed, six consecutive days of onsite education sessions were held, and a recycling mural was painted. The results demonstrated the effectiveness of the interventions since the pounds of all recyclable materials increased and the pounds of contaminants decreased.