What kind of rating does the NFPA give FireFreeze products?
I looked at the Firefeeze site and rooted around a bit and was unable to find any reference to any NFPA rating. Which may or may not mean much. Could mean it simply hasn't been submitted for evaluation.
There was some mention of the compound used having some sort of certification for use as a firefighting agent when bulk mixed for a FD but didn't follow it through. It might just be EPA approved for forest use or some other certification that doesn't mean much in terms of a hand-held fire extinguisher.
The ad copy has a lot of language that implies testing, it is X times better than Y, but I was unable to find the specifics of how that comparison was made.
There are several similar products I've seen in the local stores and non of them had any NFPA rating I could find. They were all similar spray-can units. Without any testing it is hard to draw any conclusions other than they are compact and light and claim to be effective, that and they all sell for about $10 to $18.
I sometimes carry a trigger-spray bottle, like what you might see holding 409, when I use a torch near wood. I use a mix of plain water and a few drops of dish soap so it soaks into the wood instead of just rolling off. It it looks like I might catch the wood or insulation on fire, or drop sparks, I soak the area. Having a little water handy means I can put any fire out while it is little bigger than a candle flame. Catch it early enough and there's nothing to that whole firefighting game.
For about $13 I would expect those miniature extinguishers to be significantly better than my spray bottle.
I will tell you that dry-powder ABC fire extinguishers are not may favorites. They all spread their powder far and wide, use one in a house and you will find it on every horizontal surface in every room, doors closed or not, and the powder isn't easy to clean up after it sets for a time.
Worse, if the powder is mono-ammonium phosphate based it is corrosive to many metals as soon as moisture hits it.