Quote: "I have concerns with Bearbangers. First, it would be nice to know how much of a fire hazard they might be."
They're definitely a fire hazard. They create a small explosion that sends sparks everywhere. That's why they're banned in lots of Canadian parks.
I originally bought bear bangers as a way to save money on bear spray. As an astute poster noted, if you wait for the bear to be within 20 feet of you on a charge before trying to level and fire bear spray, it's pretty much all up to the bear at that point. I prefer the idea of firing a bear banger proactively and still having the $50 can of bear spray a) unwasted, and b) still at the ready in case the bear is very aggressive. But then again we average losing a person every couple of years to predatory black bears in southern BC.
I've never had an incident that gave me pause to consider using my bangers, whistle, or bear spray. I hike with my eyes on my surroundings and talk/sing to avoid surprising something in a thicket. (SOP in predatory bear country.) It's still nice to know they're in my front pocket, though, and that I can fire one off any time I'm even getting nervous about the way a bear is looking at me.
Bear bangers have the further advantage of launching mini flares from the same pen launcher. If you were ever laying at the bottom of a ravine with a broken leg and had to attract the attention of a rescue operation, you could start with the sound (as loud as a rifle shot) and then switch to flares when they got to your end of the valley. Pretty versatile for such a tiny and inexpensive piece of kit.

