LED lights found to kill coronavirus: Global first in fight against Covid-19 (opens in new tab)

Agreed. Safer would be 222nm UVC as it can't penetrate the outer layer of the eye. This is what medical facilities actually use. Unfortunately no LED's exist that can emit in this range at a useful output power. This is still limited to excimer lamps. There are LEDs in this range, but they can't emit high enough output to break down genetic material.

Yeah, far UVC is great for the exact reason that it's far less harmful to human skin. However, "far uvc" (207-222nm) leds are even more expensive. Many far uvc devices aren't available to general consumers (to control demand). The units that are available to the general population are incredibly expensive, at least $2k for a lamp large enough for use in a small bedroom.

https://www.ushio.com/product/care222-filtered-far-uv-c-exci...