Yeah, as brushhippie says, BP gets wet a couple of times before we get it.
Probably, at some point during the mixing of the components, just for safety.
But, really, don't use the stove.
When I was a kid, one of the other kids in the neighborhood used to make all our fireworks for us.
One day he tried to reinvent the wheel, and was sure that heating up the home made BP would make it more potent.
You know those old movies, where things go blooey, and everyone in the vicinity stumbles out of the smoke all covered in soot and singed around the edges?
That's what he looked like.
Lock the doors, they're coming in the windows.