The main purpose of the book is to bring the focus of the practitioners of CLTS to the most important element of CLTS, namely the unconditional empowerment of the local communities to decide on their collective hygiene behavior practice by themselves. This book is the latest and evolved version of facilitation, training and quality scaling up of CLTS as has been experienced across Asia, Africa and Latin America and documented by the pioneer of CLTS and his close associates. This book has an enormous scope of assisting the governments, NGOs and other major actors of the developing nations to fast-track their efforts of achieving ODF national status, which will culminate into achieving SDG 6.2, in order to become an ODF world.