When we change our clocks, many recommend changing your smoke alarm batteries. If your smoke alarms use alkaline batteries, you should change them once a year. If your smoke alarm is more than 10 years old, you should replace it! Be sure to test your smoke alarms every month. The U.S. Fire Administration recommends putting a smoke alarm in every bedroom of your home. You should also check for local building codes or ordinances concerning placement of smoke alarms. For more information and materials to download, visit the USFA website.