Knowing how to clean baby bottles properly helps protect both breast milk and formula from contamination. It is one of the simplest ways to lower the risk of feeding-related illness.
CDC guidance is clear: bottles should be cleaned after every feeding.
What needs cleaning
Bottle cleaning includes:
- bottles
- nipples
- rings
- caps
- valves or membranes, if your bottle has them
How to clean baby bottles properly
Wash your hands first
Start with clean hands before handling dirty or clean feeding items.
Take bottles apart completely
Separate all parts so milk residue is not trapped in hidden areas.
Use a clean wash basin or dishwasher
CDC advises against putting feeding items directly into the sink because sink germs can contaminate them. If washing by hand, use a basin used only for infant feeding items.
Use hot water and soap
Scrub with a clean bottle brush used only for infant feeding items.
Rinse well
Rinse under running water or as directed after washing.
Let items air-dry
Place items on a clean drying rack or clean towel and allow them to dry thoroughly before storing.
Do bottles need sanitizing?
CDC recommends sanitizing in certain situations, especially for younger babies, babies under 2 months, babies born prematurely, or babies with weakened immune systems. Even when not strictly required every time, some families prefer to sanitize regularly.
Important bottle safety reminders
- clean bottles after every feeding
- do not just rinse and reuse
- throw away leftover formula from a used bottle after the safe time window
- keep clean bottles and nipples stored in a protected, dry place
When to replace bottle parts
Replace nipples or parts that are cracked, sticky, torn, or hard to clean.
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