Spraying disinfectant on the streets, as practised in some countries, does not eliminate the new coronavirus and even poses a health risk, the World Health Organization (WHO) warned on Saturday. "Spraying or fumigation of outdoor spaces...is... not recommended to kill the Covid-19 virus...because disinfectant is inactivated by dirt and debris," explains the WHO.

from Times of India https://timesofindia.indiatimes.com/world/europe/spraying-disinfectants-can-be-harmful-says-who/articleshow/75784323.cms