cleaners in appropriate garb and eye protection

could also use uv devices to kill viruses on surfaces etc

Glowing like light sabres, eight bulbs emit concentrated UV-C ultraviolet light. This destroys bacteria, viruses and other harmful microbes by damaging their DNA and RNA, so they can't multiply.

It's also hazardous to humans, so we wait outside. The job is done in 10-20 minutes. Afterwards there's a smell, much like burned hair.

"There are a lot of problematic organisms that give rise to infections," explains Prof Hans Jørn Kolmos, a professor of clinical microbiology, at the University of Southern Denmark, which helped develop the robot.

"If you apply a proper dose of ultraviolet light in a proper period of time, then you can be pretty sure that you get rid of your organism."

He adds: "This type of disinfection can also be applied to epidemic situations, like the one we experience right now, with coronavirus disease."