In simple words, they try to transform filthy and unsanitary public places into something so beautiful that people who knowingly or innocently spoil such places don't feel like doing that anymore. Leading by example and several unique qualities, they are evolving into something really special. Staying anonymous and “Kaam Chaloo Muh Bandh” are some of their important qualities.
To know more about them, you can visit their website:
Their Facebook page is becoming extremely popular:
To fully understand their work, their youtube videos are very helpful:
To truly appreciate and admire their work, becoming one of the UI is the best way.