Review on 🔬 Kidde Radon Detector: Home Kit for Accurate and Professional Analysis by Phil Kowal

It definitely works and costs less than competing models, many of which I suspect are exactly the same (and tested in the same lab). I deduct two stars mainly because it was delivered without instructions and I therefore only realized after completing the test and filling out the laboratory form that I had to write down the time the packaging was opened (= time the test started). The box looks like it has been opened so it could be a customer return which upset them.