In Masjid al-Haram, the holy Ka’aba, Hajar al-Aswad Black Stone), Rukn Yamani and Maqam Ibrahim (a stone associated with Prophet Ibrahim (Abraham) are among the places sterilized.
According to Abdu Rahman bin Abdul Azizi Al-Sudais, president of the General Presidency for the Affairs of the Two Holy Mosques, the measures are aimed at protecting the health of the pilgrims and worshippers.
Saudi Arabia last week temporarily suspended entry of Umrah pilgrims after a surge in Covid-19 cases in the Middle East.
First detected in Wuhan city in central China in December, the virus has spread to more than 100 countries.
The global death toll is around 3,800 with more than 100,000 confirmed cases, according to the World Health Organization (WHO).