To clean the Activity Mat, Organic Cotton Teething Ring, and Montessori Ball: Remove any cards from the Learn to Focus Zone and close each of the three corner attachment straps to form a circle (this prevents snagging). Prior to washing, close the attachment loops on all 3 corners. Teething Ring preparation: Untie the Crinkle Teether fabric from the ring. Machine wash the fabric items using cold water and gentle cycle. We recommend that all fabric items be air dried. Wipe the wood and plastic parts with a damp cloth and non-abrasive cleaner, as needed. Check regularly to ensure all attachment straps and plastic connection points are secure.