Test the detector every month and replace batteries once a year or whenever the detector signals a low battery. Replace detectors that are more than ten years old. Plan your escape from fire. Be sure to have at least two unobstructed exits, doors - windows, from every room. Keep an eye on smokers.
Careless smoking is the leading cause of fire deaths in North America.
Provide a proper ashtray for discarding butts. Before going to bed or leaving the residence check cushions and upholstered furniture for smoldering cigarettes. Remember matches and lighters are not toys. Use only child resistant lighters and store matches out of reach of children. Have a fire extinguisher handy.