this post was submitted on 06 Nov 2023
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UV-c lights are actually much cheaper than UV black lights as they don't require the phosphor coating required to block the harmful frequencies. On top of that there was a flood of UV-c bulbs onto the market from the pandemic.
What really should have tipped them off that they are using bulbs is that UV-c bulbs emit a more blue color whereas black lights emit a purple color. Or the wierd smell emitting from the ozone coming off the bulbs.
Yep, UV-C LEDs are insanely cheap. I bought dozens on eBay a few years ago.