Is spraying disinfectant in public spaces a good way to fight COVID-19?

Targeted disinfection of high-touch surfaces is more effective and cost-effective, expert says

A specialist sprays disinfectant while sanitizing a street to prevent the spread COVID-19 in Moscow on April 12. (Maxim Shemetov/Reuters)

Workers wearing protective suits, rubber boots and tanks of disinfectant strapped to their backs have been photographed all over the world hosing down plazas, roads, church steps, airports, vehicles, indoor spaces and even the occasional person.