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How often to wash bed pillows
Every three to six months
One study found that 16 species of fungi can live in an average pillow, and the stuffing actually attracts allergy-causing dust mites. So to ensure you're only laying your head down in a clean space, wash your pillows a few times throughout the year.
1. Use the gentle cycle on your machine, hot water and liquid detergent (powder can leave a residue). Wash two regular-size pillows together to balance the load (king-size ones should go one at a time).
2. Run the rinse cycle twice.
3. Then, to dry them, place pillows in the dryer with two clean tennis balls, and set on low. Polyester-or cotton-filled pillows take one to two hours to dry; down requires two hours or more (check for moistness or clumps by pinching several spots on the pillow.)