Since CO exposure occurs primarily in the home, the installation of battery-powered or battery-backed CO alarms—both in the home and garage—can prevent poisoning. These detectors are inexpensive and available at common retail stores. Unfortunately, despite the easy availability and access to CO detectors, only 39 states currently have legislation mandating their use, and approximately two-thirds of the states with existing legislation only require CO detectors in newly built structures.8
In 2010, the state of New York enacted legislation known as “Amanda’s Law,” (named after a teenaged girl whose death was caused by CO poisoning from a defective boiler) mandating CO detectors in all one- and two-family homes with heating sources that may emit CO or have attached garages. However, an industry survey in 2011 found that nearly half of New York families were not aware of this law.9 The two largest surveys on home CO detector use—those conducted by the US Census Bureau and CDC—estimate the national rate of having a working CO detector in a home is 32% to 40%, with a lower prevalence among those living in manufactured housing, renting a home, or living below the poverty level.10