The national fire safety board recommends that you CHANGE THE BATTERIES in your smoke alarms and Carbon Monoxide detectors once a year during daylight savings time. Price of new batteries: $4.00. Your family: Priceless.
And did you know you’re supposed to completely replace smoke detectors every 7-10 years. So, if you’ve got some used-to-be-white-but-its-now-yellow detectors in your home–replace them now!