Your pillow alone may be home to 40 million bed mites. {To them your head is just one large oily bon-bon}. And don't think a clean pillow-case will make a difference... Indeed, if your pillow is six years old--which is apparently about the average age for a pillow--it has been estimated that one-tenth of its weight will be made up of sloughed skin, living mites, dead mites and mite dung.
( Bill Bryson )
[ A Short History of Nearly ]
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