Fire extinguishers might seem relatively straight forward — you just point the nozzle and the fire and pull the trigger — but they’re a bit more complicated than people think. Before you ever pick any fire extinguishers, you must first know when, and how to use them. Here are a few tips to help you be prepared. When Should You Use Fire Extinguishers. Most home fire extinguishers are small, and are meant for immediate use on smaller fires — not to fight big blazes. This means the only time you can really use home fire extinguishers is when the fire…