The Virus-Limiter 4.0 a.k.a SmartSweep is a robot with a vacuum cleaner attached to it. It Follows a certain path and cleans normally. It also has a hose that sucks the dust in for manual cleaning. You might be thinking "okay, a bunch of vacuum cleaners can do that". But this one has a U.V. light in the middle that kills maybe existing COVID-19 particles