I bought a box of five Dragon's Breath rounds at a gun show years ago. Waited until a rainy day, then went out to a muddy gravel pit and set up a paper target at about 25 yards. The flame set the target on fire, then the magnesium hit the backstop and shattered into three pieces, all of which went over the backstop into the desert, setting three bushes on fire. Because it had been raining, we were able to stomp out the fires, but lesson learned: magnesium is serious stuff. Be really careful where you use it, and be aware that the magnesium keeps burning for a long time after the shot is fired.
I still have four rounds left, in case an occasion arises in which the problem is actually worse than the side effects. A general riot would be one example.
I still have four rounds left, in case an occasion arises in which the problem is actually worse than the side effects. A general riot would be one example.