Even if you're able to extinguish the fire on your own, it's best to have the fire department on the way in case something happens. [substeps] When the fire department arrives, they can check that the fire has been extinguished properly.
[header] How to use a fire extinguisher [title] Instruct someone to call the fire department or call them yourself. [step] Evacuate everybody from the building first. Tell somebody to call the fire department or emergency services once that person is safely outside.