Some ultraviolet (UV) disinfecting wands—pitched to kill bugs like E. coli or Salmonella on surfaces—emit unsafe levels of radiation that may injure skin or eyes in a few seconds, warns the FDA. Some wands gave off 3,000 times more UV-C than the recommended limit.

What to do

Go to the FDA’s website for a list of risky UV sanitizers. Chemical disinfectants are safer. It isn’t known whether UV-C wands inactivate the Covid virus, says the FDA. (Also, Covid is largely transmitted via the air.)


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