I’m skeptical on the element extinguisher.
I think it would work great for a fire that has just started, where the flames are small, but from the videos I’ve seen show you have to get pretty close to the flame to put it out. I’ve been around quite a few fires over time, and I want an extinguisher that I can attack the fire from more of a distance. The videos I’ve seen show you getting your hand pretty close to the flames/base of the fire.
I love the fact that there’s no residue with them, but if I can’t put out the fire, it doesn’t matter.