This study investigated the effectiveness of Flushing Away Noise, an interdependent group contingency using an iPod equipped with a decibel meter application, for reducing noise in restrooms. Two Head Start classrooms in the Southeastern United States, referred for demonstrating high levels of student noise in the restroom, were included in the study. The authors used a multiple-baseline design across 4 groups to determine existence of a functional relation between implementation of the intervention and a decrease in noise level. After introducing the intervention, the authors observed substantial decreases in noise level in all groups. In addition, teachers indicated that they found the intervention socially acceptable. The results support the utility of Flushing Away Noise for promoting behavioral expectations in a bathroom setting.