The Plush part of your Wubbanub: Machine washable. Place in lingerie or mesh laundry bag. Wash on gentle cycle. Remove from washer and allow to air dry. ,,Pacifier Nipple: Wash nipple before initial use. Place nipple portion in warm water using a mild liquid soap. To sterilize, place nipple portion of WubbaNub into boiled water for 2 - 4 minutes.