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Do you think this thing works or is it a waste of $20?

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Waste of $. No decent, effective UV light costs only $20! None!
Punches · 46-50, F
@Thorstormbringer I think most lights put off UV rays but not normally enough to kill microscopic life forms.

So they are not techically fibbing about it being a UV light. They are just fudging the truth about it killing anything.