UV-C light inactivates virus and bacteria. You need enough Wattage (> 50 Watt UV-C lamps) so 99.9% of Covid-19 can be inactivated in less then 2 seconds. This method works extremely fast and effective if you use the proper professional products.
The University of South Denmark has done an investigation in December 2020 and found that the BARx1 is deactivating SARS-CoV-2 virus from 10cm distance within 2 seconds by >99.9% (>log3). See the full report on this investigation.
ClearSafeProducts has conducted a study on the technique behind UV-C surface disinfection. How does it work, information on scientific studies (Bianco and Griffiths) and practical usage tips. Based on this study ClearSafeProducts compared different professional UV-C Bars that can be used for surface disinfection. It is clear that the products from Efsen (manufacturer from Denmark) scored the most points and are the Best Buy. They score the best on effectiveness, personal safety and costs. Efsen uses the highest quality of UV-C lamps from Signify Philips.
EFSEN’s commitment to personal safety is displayed in the extended user and safety manual. Efsen has also made an 'Operator test' to ensure the operators understand the safety precautions they need to follow. The products are also supplied with anti-UV-C gloves and special face shield to protect the operator.
Normal clothing provides enough protection for the skin, see the video 'Kleding beschermt tegen UV-C' on the product videos page.
Efsen manufactures 2 different models: UV-BARx1 (with 60 Watt UV-C power) and the UV-BARx1 PRO (with 120 Watt UV-C power). Basically these 2 models are the same, but with the PRO you can work twice as fast.
To make you work even more efficient, you can use the UV-C BAR Powerbank so you can use the BAR without having to walk around with long electrical cables.