Is it true after one year, the average pillow contains much of its weight in dust mite feces?
A. Studies estimate dust mite waste comprises between 10 and 25% of a pillows weight after a year or two of use. A study reported in the British Medical Journal in 1996 found that polyester fiber pillows actually contained more grams of fine dust than feather pillows. Ohio State University researchers recommend replacing synthetic fill pillows every two to three years.
