"The other sprays I mentioned are NOT applied to the reptile so they are safer then a chemical you apply directly to the snake."
Yes but doesn't this cause the mites to be harder to get rid of? You can't possible nip them entirely in the bud unless you treat the living adults on the snake.
With NIX it can take one treatment of snake, cage and done. No more exposure to anything. I also believe there have been QUITE a few reported and unexplained deaths from using Black Knight while I haven't heard ONE bad remark about NIX.
And considering all the other products are used at full strength, while NIX is diluted in a gallon of water. If I had lice I'd be using NIX with no ill effects FULL STRENGTH on my head!!!!