I am curious, what size Fire Extinguishers did you get? My guess would be the normal 10lb extinguishers. You might want to get a 30lb to back up your smaller ones. I know that the average person will never have to use their extinguishers, but in the off chance that you do, its better to have at least 1 BIG extinguisher to fall back on when you discharge the little ones.
My father use to know a Firefighter named Brian. Brian would go to companies and teach the employees how to put out fires so that they could do something to contain them while the Fire department was on their way... So, one hot LA day, he sets up a small pavement fire out in the parking lot of a business and in the course of his teaching shows how to put it out with a small extinguisher without problem. He resets it, and hands a new extinguisher to an employee and tells them to put it out, and for two or three fires, this works. Too bad that the heat of the day (around 90), plus the fires heat, have heated the tar in the pavement... So the last group uses their extinguisher to put out the fire, only it doesnt go out. She they call for help.
Brian grabs a fresh extinguisher, and empties it into the fire to no effect. Goes back to his truck and grabs another one...and another...and another. Seeing that he has a problem, he calls the Dispatcher and tells them that he needs One (1) Fire Truck to come to him to put out a "Small Parking Lot Fire". The Dispatcher types this in, and the computer says that its an industrial area and requires that they dispatch EVERY fire truck in the valley... Brian, just putting down the radio, started hearing siren after siren start up... A line of trucks shows up shortly after. When the lead truck pulled up, the Fire Chief steps off and walks over to Brian to find out whats going on. Brian explains and points to the 20 or so spent extinguishers that he used.
The Chief turns, walks over to Brian's truck and opens the back, where he pulls out a 50lb Extinguisher. Carries it to the fire and with one long squeeze of the handle, puts out the fire. Brian was heard to have muttered "I forgot that I had that..." to the Chief when he asked him why he didn't use it.
Moral of the story: 1) Have a large extinguisher handy even if you think that you will never use it. 2) When calling in a fire at an Industrial Complex, Expect alot of Peer Witnesses to see your screw-up.
Brian also did a demonstration about how Gasoline is hard to ignite... He took a cup of gasoline and dropped a lit cigarette into it while the room gasped in shock. When nothing happened, he continued his explanation while he lit up another, grabbed an eye dropper of gas and put a drop into a large stoppered bunsen burner, and started shaking it. After shaking it for about a minute, he pulls out the top stopper and drops in the cigarette and BOOM.... Little bits of paper and tobacco falling to the ground...
No more than Thirty (30) seconds later, People from around the building start showing up with first aid kits and wanting to know what the "Explosion" was...
Brian has a Reputation.