is it important to sterilise milk bottles pacifiers and teethers   

It is not advisable to use plastic milk bottles in the first place. If you decide to use them, it is necessary to clean regularly. It is also important to sterilise them time to time. Children, especially infants can get affected to germs and bacteria easily, hence clean the bottles regularly. Just washing the bottles with soap water will not make the germs go away. The easiest way to sterilise milk bottles is to keep them in boiling water for a few minutes. Similarly, if your child uses pacifiers, it is necessary to clean and sterilise them as well.