I use that stuff when I cook batches of chili. The first time I used it, I disregarded his warning at put about 5 drops in a bowl of chili. I went back and dumped the bowl in the pot of chili and mixed it up - that was about enough.
Not 2 days ago we were at Firehouse Subs for lunch and a friend of mine made a pool on his plate with Insanity Sacue, dipped his sub in it and took a bite. I noticed the label JUST as he was biting down and tried to warn him, but it was too late. How he didn't pass out, I have no idea.