Are the Test Kits sold at Home Depot or Lowes any good?

The radon test kits commonly sold at local hardware stores, Home Depot and Lowes are OK. They do not have the accuracy of a professional electronic radon monitor but as a homeowner you primarily need to know does you house have very little radon, a moderate amount or a lot of radon. Day to day differences in weather and house activity causes a greater variation in radon levels than the variation from simple radon test kits. Ultimately the best method to determine your radon levels is to do more than one test. ... more