New bottles and nipples should be sterilized on first use. For future feedings of healthy babies drinking expressed breast milk, it’s sufficient to wash with hot, soapy water and let air-dry, or put them through the dishwasher. Place sterilized bottles and pump kit parts on a piece of paper towel to air-dry instead of a dishtowel, which could contain traces of bacteria.
Have more bottle-feeding questions? Download our chart here and put it on the fridge—it has the answer to all your questions.
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