Acting on this insight, he developed a methodology called Community-Led Total Sanitation (CLTS), which has since been used in more than 60 countries around the world.4 But don’t let the boring acronym fool you: This is a shocking process. Here’s a stylized description of a typical intervention: A CLTS facilitator arrives in a village and introduces himself.5 “I’m studying the sanitation profiles of different villages in the area,” he says. “Mind if I look around and ask some questions?” Once he has hung around long enough to attract a small crowd, he conducts a “transect walk,” leading the
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