Boil in water for 5 minutes before first use, use enough water to avoid possible damage. We recommend using the NUK Vapo Rapid Steam Steriliser for sterilisation. Remove any residual liquid from the teat after cleaning or sterilising the soother, and then allow it to dry. We recommend cleaning with NUK Soap, which removes any milk residue adhering to the container, never with the dishwasher. Do not put soothers in the microwave. Carefully inspect the soother before use, especially when the child already has teeth. Pull the soother in all directions, discard if it shows signs of deterioration or fragility. Do not expose to direct sunlight or leave near a heat source. Do not leave in disinfectant for longer than recommended, as this could weaken the soother.