You want to achieve open defecation free communities but you do not know how to convince the last non-owners of latrines? In a project in rural Malawi we were able to analyze the (de)motivating factors and develop successful intervention strategies.
Short document about RANAS factors to be changed for non-owners
Scientific article about (de)motivating factors of non-owners in Malawi
Short document about the description of the interventions
Using these interventions about 70% of the formerly non-owners built a latrine.