We’re springing forward this weekend, our annual move into Daylight Savings Time. The U.S. Consumer Product Safety Commission (CPSC) is urging consumers to replace the batteries in their smoke and carbon monoxide (CO) alarms this weekend, and to make it a habit to change batteries each time we spring forward and fall back. Two-thirds of fire deaths occur in homes where there are no smoke alarms or no working smoke alarms. That is why it is important to replace batteries once every six months and to test your alarms every month to make sure they work. CPSC recommends consumers have smoke alarms on every level of their home, outside bedrooms and inside each bedroom. CO is called the 'invisible killer,' because it is a colorless, odorless and poisonous gas. Because of this, people may not know they are being poisoned. Carbon monoxide is produced by the incomplete burning of fuel in various products, including furnaces, portable generators, fireplaces, cars and charcoal grills.