Okay.
With your observations, maybe I won’t get a 2nd WK30 for my wife to use in our other house to find cat urine. Sounds like the Convoy S2+ is a better option.
I mostly find detergent residue with my WK30. Doesn’t even pick up drool on my bed pillow.
So 30nm’s wave length difference between emitters makes quite the difference in what is revealed to the eye.
Yeh. Some things fluoresce under plain ol’ blue light. Others under violet. Others only under 395nm and shorter, then 385nm and shorter, and best is 365nm which’ll get most things including the red strip on US hunnerts.
…… call me absolutely SHOCKED when I turn the UV mode on in my bathroom, and kitchen! Do I need a cleaning service? 
Man, I know what you mean. I can’t believe what I see. Even after a good mopping. YiKeS…
Remember - many cleaner residues will fluoresce due to whiteners and other ingredients. Not anywhere near everything that’s glowing under 395nm is going to be a biological.
Just look at how anything white glows.
Just keep telling yourself that. I’m sure all will be ok! 
Has anyone opened the head on one yet? Is the MCPCB one large one with the leds on it or multiple small ones? Is part of the driver on the MCPCB? Just wondering about modding, would like to put a Nichia UV in it for lower frequency.
No joy. Glued?
I received it a couple days ago, but haven’t had much time to use it.
I really like the white, it’s beautiful. I hope to get more lights with LH351D in the future. I had been wanting a light with both white and red, and now I have one. The red can get really bright. I would have preferred if the red had one lower level for four levels total, like the white, but the low is okay.
I like the size and the charging port cover seems to stay in place well. I didn’t notice the battery rattle until I tried to make it happen.
The UI works fairly well, but I find holding to change levels and a single click for off, like the SC31, more natural. I’m glad there is a shortcut to low.
Coupon Code … secret password … by one get one free … ?
Ooooh, that would be nice, but…
I struggle to hit the perfect triple-click for UV. Takes me a few tries. Sucks to get old and lose your dexterity. Sure like the light though.
Try quadclick for lockout…
Did it but ya sure gotta be fast. Missed the first few times. Got to unlock the first time though. 
Yeh, I’d just TCLO it if needed.
On order-You have my curiosity!
Code MY9WWF8L is till working. Ordered one for my family living on the beach in Florida. During turtle season, they are only allowed to use red flashlights on the beach to avoid disturbing the turtles. They will love this light- my family, not the turtles 
Code did not work for me just now.