The document discusses community-led total sanitation (CLTS) approaches to improving sanitation and achieving open defecation free communities. It outlines some of the key principles of CLTS, including community empowerment, collective decision making, and locally appropriate solutions rather than external subsidies or prescriptions. It also discusses some of the challenges to scaling up CLTS, including reliance on subsidies, prescriptive technologies, and a lack of coordination between different organizations. Examples from several countries show how CLTS has led to innovations and improved sanitation outcomes when communities lead the process.