Wash your comforter with mild laundry detergent when it's time for a cleaning. Add 1 cup of white vinegar to the rinse cycle to act as a natural fabric softener and static remover.
Dry the down comforter in the dryer with two or three tennis balls and one wool dryer ball. The tennis balls keep the down from bunching up while the wool dryer ball prevents static electricity.
Fill a mist spray bottle with 2 ounces of white vinegar and 6 ounces of water. Before getting in bed, lift the covers and spritz two or three mists of the diluted vinegar between the down comforter and top sheet.
Rub body lotion into your skin before going to sleep each night. The moisture in your skin counteracts any static electricity remaining in the bed.
Turn on a humidifier each night in the bedroom. If overly dry air is a problem throughout your home, run the humidifier throughout the day to control air moisture level.