Radon is a colorless, odorless gas that can trigger lung cancer as it seeps inside a home through cracks in the floor or walls.
The U.S. Environmental Protection Agency suggests how to test for radon at home:
- Use either a do-it-yourself kit or hire a professional tester.
- Short-term tests, which take two days to 90 days, don't capture the most accurate picture. Radon levels can fluctuate daily.
- Longer-term tests give a better average of your home's radon exposure over time.
- Radon levels higher than 4 picocuries per liter can be harmful and should be remedied by a professional.
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