I have heard that CO detectors need to be replaced every two years. Is this true, or is it just a gimmick for the manufacturers to sell more product?
Does anyone have any research or materials to back it up?
Thanks for sharing.....
P.S. If you choose the last option in my poll, do yourself a favor and read this: http://www.msnbc.com/onair/nbc/dateline/monoxide.asp