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How can I tell if I have too much radon in my home?

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Radon is tricky. You can’t see it, and you can’t smell it. So, the only way to know how much radon you have in your home is to get a test kit and do a test.

You can buy test kits at a lot of different stores — hardware, lawn and garden, outdoor supply, and department stores. They cost about $25 and take just a few days to do. Then you send your test kit in to a laboratory, and they tell you how much radon you have in your home.