At Parvar Purab village, an hour from Uttar Pradesh's capital Lucknow, newly-built toilets dot the front yards of modest homes. On them are brightly painted slogans - 'swachh rahenge, swasth rahenge (stay clean, stay healthy)' and 'bahu betiya dur na jaye, ghar mein shauchalay banvaye (so your daughters don't have to go far, build toilets in homes)'. Residents tell us they were all built just a month or two ago.