Answer:
- By sanitizing the bottle.
Prepare a bleach solution of 2 teaspoons of unscented bleach per gallon (16 cups) of water in a clean wash basin. Submerge all items completely, checking that the solution touches all parts and there are no air bubbles in the bottles. Squeeze solution through nipple holes. Soak items in solution for at least 2 minutes.
Explanation:
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