I apologize -- my comment was intended to be helpful. I have been trained on the use of fire extinguishers and I have trained a number of people to use them in turn, and I wasn't kidding. If you can't knock a fire down with one, it's time to get out of danger and call the professionals.

We bought two extinguishers today and two later because at some point dialing 9-1-1 may not even be an option.

Jeanette Isabelle

just a comment.. if you ever have to discharge a dry chemical extinguisher around other people, make sure to give them warning to take a deep breath...

In that case you might be able to attack the fire with two people and two exinguishers at the same time.
If the fire is two big for that, there are severe risks due to rapid spreading of the fire, toxic fumes and smoke. There is a reason why professionals have a mask and air tanks. By the time you haul the second pair of extinguishers the fire may already be beyond what you can control.
Trying to put it out anyway would nicely fit in the topic "What not to do in a disaster".
I second choasmagnets advice.

When I read 2 extinguishers, I assumed it was for the same reason I have 2: one handy in the kitchen and one handy in the garage.

With that understood, you are still better off abandoning the structure and escaping with your life, than you are continuing to fight a fire on your own after a single fire extinguisher has failed.

One in each room.

Jeanette Isabelle

Oh, after the fire extinguisher failed. You did not mention that.

Jeanette Isabelle

That's what I meant by "if you can't knock the fire down with one of them".

There's nothing worse than running out of fire extinguisher when you still have some fire left!