OH, I agree with you on the black light. You would be surprised how much your clothing reflects. They say that game can't see colors and only see in black and white. When they see black and a "very bright reflective white" at first and last light it is game over!
As a still hunter i've researched what deer/elk can see. It does me no good to be sneaky if I look unnatural to game.
From all i've read they can see yellow and blue. They see all natural colors as a pale yellow. They don't see red and green. It looks like pale yellow to them. Just like the foliage. That's why the old red/green/black wool clothing worked so good. Still does. All the camo made doesn't work any better. Camo was made by the military to fool humans. Not animals. You don't need to look like a bush to animals. You just need to be the same color, and have your outline broken up. They do see blue though. That's why wearing jeans is not a good idea. Animals are only used to see blue as the sky. Not the legs of a predator. Since blaze orange is in the red family. They see as a pale yellow like everything else. It blends right in.
Besides colors. The biggest problem we have is glow from UV brighteners. They really show up in darker lighting. Just when we hunt the most at dawn and dusk. Deer and elk have no UV filters on their eyes like we do. We can only see what they do with a black light. If you have UV brighteners in your clothing the deer can see you the same as we can see blaze orange. That's a good way for you to think how important it is to get rid of them. A sport wash will not get rid of them. It will just prevent to from getting anymore of them. What's needed after the sport wash is a UV killer in a spray. It's amazing how the glow disappears as you spray under a black light. Once it's removed from the clothing it will never come back as long as you use a sport wash. A good sport wash will also remove all the human scent.
Most hunters are only concerned with scent. It is very important too, but don't forget the neon blue glow from UV brighteners.
