This document discusses sanitation marketing and behavior change through small commercial sanitation businesses. It notes that village sanitation businesses can provide basic sanitation products using commercial principles like customer focus, product, price, place, and promotion. The document also references Dr. John Snow's work identifying the Broad Street pump as the source of a cholera outbreak in 1850s London, and lists four key themes of a conference around functional/environmental sustainability, behavior change/social sustainability, institutional sustainability, and financial sustainability.