murphyslaw wrote:I have several CO/smoke detectors. As well as a few CO detectors. When in doubt I walk threw the house with this.. http://www.pksafety.com/qrae-ii-gas-detector.html. All I have to do is grab it out of my truck. When ever I light a stove, refire a furnace or anything I turn it on. and watch it for a few hours. As well as walk around with it.