Dry them: Place pillows in the dryer along with two clean tennis balls, and set on low heat. Polyester- or cotton-filled pillows take one to two hours to dry; down requires two to three hours, sometimes longer. To prevent overheating, remove the pillow regularly, fluff and return.
Check for dryness: It’s imperative to dry down pillows completely to prevent mold and mildew from growing. After two hours, remove them from the dryers, let cool, then squeeze several spots on the pillows between two fingers. If there is any moistness or clumps, return them to the dryer.
Clean: Every three to six months.
Photo Credit: Flickr / just.Luc