Now a cleaning robot will replace those people who used to clean virus-laden surfaces. I read the news here https://www.sciencenewsforstudents.org/article/new-robots-can-clean-virus-laden-surfaces-so-people-wont-have-to The whole world is currently suffering from coronavirus infections that have killed millions of people on the earth. In this pandemic condition, people have to follow covid protocol that include wearing face mask, washing hand with soap or sanitizer, and maintaining distance between others. In addition to that, it is very necessary to make your locality a virus free zone. So you need people to sanitize a large area. It is not a job of a single person. In that case, this new robot can help you spray a germ-fighting cleaner onto surfaces so that the spread of coronavirus and other diseases could be stopped. [The image is taken from sciencenewsforstudents.org]