To address the interconnected challenges of improving rural sanitation at large scale, WSP has tested an approach that combines Community-Led Total Sanitation (CLTS) and sanitation marketing, which draws on social and commercial marketing approaches. In order to generate discussion and learning around sanitation marketing—a relatively new field—WSP developed an Introductory Guide to Sanitation Marketing and an online companion, Sanitation Marketing Toolkit, by Jacqueline Devine and Craig Kullmann. The print guide and online companion share principles, key tips, and documents from WSP’s experience developing rural sanitation marketing programs in Cambodia, India, Indonesia, Peru, and Tanzania.