To clean nipples: Boil nipples for 5 minutes before first use. After each use, wash in hot soapy water for about one minute and rinse thoroughly. Dishwasher safe, top rack only.

WARNING: TO PREVENT A POSSIBLE CHOKING HAZARD, test strength regularly by pulling hard on the nipple. Inspect regularly, especially when baby is teething. If nipple becomes cracked, torn or shows other signs of excess wear, DISCONTINUE USE IMMEDIATELY.
Do not attempt to enlarge hole in nipple as this will cause tearing.