Going full "research geek" on this.
The science/tech behind it seems logical. After reading their product description and some fancy Googlin' I reached the
notion that their product is a specially formulated cover scent. It may be a concentrate with additives that cause it to bind longer to olfactory hairs and receptors.
It's aroma compounds may also bind with human scent when facilitating "Olfactory Fatigue" thereby desensitizing the animal to our smell even when the current application of the product reaches the end of its effectiveness and our scent is more prevalent. That is, to say, our scent had been present in the animal's olfactory system but dismissed due to sensory overload. Then, as the effects of the product application wear off, our scent still benefits from Olfactory Fatigue.
Alternatively, as a suspected sensory binding additive-enhanced concentrate, it may monopolize olfactory receptor availability allowing our scent to pass beyond capture and detection for the duration of the effectiveness of the application of the product.
Here's some of the links that I used to reach my
wild-azz assumptions:
tl;dr: Never used it and I could be wrong, but it just might work. When all else fails, spray Cald estrous on a Clorox stump.