As I posted the last time these were on here, the videos show somewhat of a false claim. It appears the demonstration is putting out a grease fire on the stove. These extinguishers are not rated Class K, which is for Kitchen type fires. In addition, the demonstration show the use of an ABC Dry Chem extinguisher on a grease fire, which has been proven to spray grease around. This is why they are not listed for kitchen use.
As well, it appears that the agent and foam are UL listed, however, it does not state that the device is UL listed.