Parents should clean their baby’s bottles immediately after every feeding to prevent a build-up of germs and bacteria. After washing your hands, thoroughly scrub bottle parts in warm, soapy water with a bottle brush, then let them air dry. There is a difference between cleaning and sterilizing baby bottles. Cleaning uses soap and water to physically remove germs from the bottle. Sterilizing is an extra step to kill more germs on items that have been cleaned. Sterilizing feeding items provides more protection against all infections.
Bottles should be cleaned after every feeding. If your baby does not finish drinking a bottle within 2 hours, throw away the unfinished formula. Germs can grow quickly if breast milk or formula is added to a partially used bottle, or if a used bottle is only rinsed, rather than cleaned.
If your baby is less than 3 months old, was born prematurely, or has a weakened immune system due to illness or medical treatment, sterilizing feeding items daily (or after each use) is particularly important. If your baby is on formula milk, it is also a good idea to sterilize the feeding scoop that comes with it. You can wash and sterilize it along with your baby's bottles. Sterilization of feeding items after every use may not be necessary for older, healthy babies, if those items are cleaned carefully and properly after each use.
It is important to sterilize all your baby's feeding equipment, including bottles and teats, until they are at least 12 months old. This will protect your baby against infections, such as diarrhea and vomiting.
Before sterilizing, you need to
- Clean bottles, teats and other feeding equipment in hot, soapy water as soon as possible after feeds.
- Use a clean bottle brush to clean bottles (only use this brush for cleaning bottles), and a small teat brush to clean the inside of teats. You can also turn teats inside out then wash them in hot soapy water. Do not use salt to clean teats, as this can be dangerous for your baby.
- You can put your baby's feeding equipment in the dishwasher to clean it if you prefer. Putting feeding equipment through the dishwasher will clean it but it does not sterilize it. Make sure bottles, lids and teats are facing downwards. You may prefer to wash teats separately by hand to make sure they are completely clean.
- Rinse all your equipment in clean, cold running water before sterilizing.