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" Consider this startling fact: The air inside your house could be two to five times as polluted as the air outside, according to the Environmental Protection Agency (EPA).   Avoid the potential negative effects on your health (including fatigue, headaches, and eye, nose and throat irritation) by following these EPA tips.   1. Regularly clean water trays from air conditioners, dehumidifiers and refrigerators, and be sure that your attic and crawl spaces are well ventilated to prevent mold, mildew and bacteria.   2. Let fresh air in by opening windows whenever you can, and use outdoor-vented fans\u2014especially in the bathrooms and kitchen.   3. Don&amp;#039;t use more than one cleaning product at a time or you could create very toxic fumes. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.womansday.com/home/organizing-cleaning/tips/a3264/breathe-easier-indoors-25850/>