Problem, in a domestic situation, is that an A, B, C, E or F-class fire can occur.
Class A fires are those involving free burning materials, such as paper, wood, fabrics and other textiles, and also plastics
Class B fires involve flammable liquids and solids, such as diesel, petrol, and oils (but not cooking oils), plus solid fuels such as wax
Class C fires involve flammable gases, such as propane, butane and methane
Class D fires involve flammable metals such as sodium, potassium and magnesium
Electrical equipment fires involve electrical equipment such as switchgear or computers. (These are sometimes accidentally referred to as Class E fires, although the category does not officially exist in the UK*)
Class F fires are specific to cooking oils and fats
The problem with a wet chemical extinguisher or F-rated extinguisher from 2L:
Wet chemical fire extinguishers only work with animal fats and vegetable oils, so they cannot be used on Class B fires involving flammable liquids such as petrol or diesel.
They have usually been tested to a 13A Class A rating but should not be specified for anything other than a kitchen.
....
So it is real good to have a 2L wet chemical extinguisher, but what can you do with your 2L on other types of fire? Acually.... nothing
And the same applies for other types of extinguishers.
With PinQY you have enough time and agent to easily kill a fat fire in a common domestic situation, and even other `objects` that would catch fire as a result of the fat fire.
And to conclude: each extinguisher has been developed to kill a starting fire. Not to kill a `fire`. So it is a prevention tool, not the `solution`.