The Vexor is 15 million SHU before they mix it. They even say on their site that the SHU is meaningless. Fox does pretty good but if your using stream it takes awhile for it to do any good on someone wearing glasses. I use to sell nothing but Fox although i've tried many, if not all brands. I had a few friends wear safety glasses and hold their breath and close their eyes to try to find a stream that would work as i got tired of the blowback from oc cone and foggers. The Fox would burn their face and take about 45 seconds to shut their eyes. I also tried DPS. Most of you probably never heard of it, but it's got almost twice as much pepper in it as Fox and the the Carrier is Perchlorethyene-it opens up the pores and breaks down the oils of the skin. It had about the same results although testers did say it was a little hotter and took alot longer to decontaminate them. I also tried V4"s Shotgun Stream by ETGI. It starts out as a stream and at about 6ft starts to spread apart into a shotgun splatter, At about 15-20ft it covers an area about 2ft across. Every tester said immediately they couldnt breathe and couldnt open their eyes and asked if they could have rushed me they said their was no way. The weird thing was they all also said it was much more intense than even the Vexor which i've tried in the past and this company claims only 1 million SHU. I also testify to this as i try it on my arms and count the seconds it takes to work and intensity and the V4 is absolute instant burning with the Fox and DPS coming in a tie for 2nd taking about 15 seconds. Another awsome thing is, this stuff is a real confidence builder, not only because it works but because of almost no blowback unless there's some serious wind and because every bottle i have tried has sprayed head on of at least 23ft and just under 35ft if arching the bottle.