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How to Sterilize Sippy Cups

author image Kimbry Parker
Kimbry Parker has been writing since 1998 and has published content on various websites. Parker has experience writing on a variety of topics such as health, parenting, home improvement and decorating. She is a graduate of Purdue University with a Bachelor of Arts in organizational communication.
How to Sterilize Sippy Cups
If a sippy cup has a foul odor even after cleaning and sterilizing, throw it out. Photo Credit: Jupiterimages/Pixland/Getty Images

Sippy cups are ideal for transitioning babies from bottles to regular cups. Whether you’re giving your child milk, juice or water in a sippy cup, it will get dirty and require cleaning. According to, bacteria and mold can thrive in dirty sippy cups. If you don’t feel safe just washing your child’s sippy cup, sterilize it periodically to kill bacteria, mold and germs.

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Step 1

Fill the kitchen sink with warm, soapy water. Disassemble the cup by removing parts like lids, rubber or plastic stoppers and straws.

Step 2

Place all parts of the sippy cup in the soapy water. Use a bottle brush to scrub the cup and each part, taking care to get into small nooks and crannies. Drain the soapy water and rinse the sippy cup and all parts.

Step 3

Fill the sink with a gallon of warm water. Add 1 to 2 tablespoons of household bleach.

Step 4

Place the cup and all disassembled parts in the bleach solution. Let them soak for two to five minutes. Drain the water, then let the cup air-dry completely. It’s not necessary to rinse after soaking in the bleach solution, but let the parts and cup air-dry completely so the bleach dissipates.

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