The Fridge Hack: Can You Store Pump Parts in the Fridge Between Uses?

Pumping moms know that washing pump parts after every session can feel like a never-ending task. Enter the Fridge Hack—a time-saving trick many parents swear by. But is it actually safe? Here’s everything you need to know about how it works, the precautions you should take, and what the CDC recommends.

What Is the Fridge Hack?

The Fridge Hack involves placing your used pump parts—without washing them—in a sealed container or bag in the refrigerator between pumping sessions. The idea is that since breast milk is safe in the fridge, pump parts with residual milk should be too. This method can save time and reduce the stress of constant washing, but it’s important to weigh the pros and cons.

How to Do the Fridge Hack Safely

If you choose to use the Fridge Hack, here are some steps to follow for optimal safety:

  1. Use a Clean, Sealed Container – Store your pump parts in a food-safe, airtight container or a resealable silicone or plastic bag to prevent contamination.
  2. Refrigerate Immediately – Place your pump parts in the fridge right after pumping to keep any residual milk at a safe temperature.
  3. Limit to 12 Hours – washing pump parts at least once every 12 hours if using this method.
  4. Wash Parts Thoroughly – At least once a day, wash pump parts with hot, soapy water and allow them to air dry completely. You can also sanitize them using steam bags, boiling water, or a sterilizer.
  5. Know When to Skip It – If your baby is premature, immunocompromised, or has a health condition, it's best to follow the CDC’s standard guidelines of washing pump parts after every use.

What Does the CDC Say?

According to the Centers for Disease Control and Prevention (CDC), the official recommendation is to wash pump parts after each use. However, the CDC acknowledges that many parents use alternative cleaning methods, like the Fridge Hack. While not officially recommended, washing at least once every 12 hours can help reduce the risk of bacterial growth.

Pros & Cons of the Fridge Hack

Pros:

  • Saves time and reduces stress
  • Less wear and tear on pump parts from frequent washing
  • Convenient for exclusive pumpers or working parents

Cons:

  • Not officially recommended for safety
  • Potential risk of bacterial contamination if not done properly
  • Not ideal for medically fragile infants

Final Thoughts

The Fridge Hack can be a helpful shortcut for busy pumping moms, but it’s important to follow safety precautions and be aware of your baby’s individual needs. If you’re unsure whether it’s the right choice for you, talk to your pediatrician or lactation consultant for personalized guidance.

Do you use the Fridge Hack, or do you wash your parts after every session? Let us know in the comments!