The Care Group Model is a strategy that uses volunteers to promote behavior change at the household level. A Care Group consists of 10-15 volunteers who regularly meet with project staff for training and support. Each volunteer is responsible for regularly visiting 10-15 neighbors to share what they have learned and facilitate behavior change. The Care Group Model creates a multiplying effect to equitably reach every family with health education and referrals. Operations research was conducted in Burundi to test the effectiveness and sustainability of a lower-input Care Group Model compared to a traditional higher-input model. The research examined the impact on knowledge and practices as well as the functionality and sustainability of the Care Groups under each model.