Indore (Madhya Pradesh),the cleanest city in India becomes the 1stcity in India to use drones to sanitize the city against COVID-19 scare. Key Points Indore Municipal Corporation has hired 2 drones from a private company to sprinkle chemicals with sodium hypochloriteand bio-clean in crowded areas like vegetable markets, streets. The drones will depart with 16 litresof chemicals in each flight, spray chemicals in an area spanning 8-10 km & return after 30 minutes.