This 2012 photo released by Mission: Allergy, Inc. shows a house dust mite as seen with an electron microscope, enlarged about 200 times. Experts say dust's constant accumulation has nothing to do with poor housekeeping. Dust is a naturally and continually forming collection of some pretty gross stuff. (AP Photo/Mission: Allergy)
Read the article: Dust: You can't defeat it but you can control it
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