The Guardian reported on 26 August 2020 that :
Citriodiol-based spray can help protect against Covid-19, says MoD lab
Citriodiol sprays were made available to the army in the early phases of the Covid-19 crisis because they were known to kill other strains of coronavirus such as Sars.
The Ministry of Defence released an eight-page paper from the Porton Down-based Defence Science and Technology Lab (DSTL), which tested the efficacy of Mosi-guard, a Citriodiol-based spray, on plastic and artificial skin.
Jeremy Quin, a junior defence minister, said the research found that sprays containing Citriodiol “can kill the virus”.
Confusingly, the article further says that the DSTL laboratory also states :
However, some virus was still recoverable over a four-hour period.
Is mosquito repellant actually effective or is it not ?