For more details, please contact Madhu S Thakar at (0) 9810078028 or msthakar@gmail.com. Thakar was one of the top-10 finalists in the Bill and Melinda Gates and BIRAC's Reinvent the Toilet India Challenge in 2013-14. Despite not being awarded the grant, he continues to do his bit to help make India open defecation free.