Cleaning Cups

Freemie parts are not like other pumping tools, and our care instructions differ.

You must boil Freemie hard parts before first use, not only to sanitize, but also to make airtight. Do not skip this important step.


Freemie Cups should last about one year with proper care. To avoid critical system errors such as leaking, milk in tubing, or other malfunctions:

  • STEAM – Do NOT steam any Freemie parts (e.g., microwave bag, dishwasher, or sterilizer)
  • COLD – Do NOT store Freemie Cups in the refrigerator
  • SCRATCH – Do NOT use abrasives such as bottle brushes

Cleaning Options

Option 1: Boiling

Boil hard cup parts (cups, funnels, valve bases) before first use. These parts can be boiled daily if desired.

Boil hard parts for 10 minutes at a rolling boil. Be attentive and watch the pot. Use a very large pot or multiple pots to avoid crowding. Crowded parts will melt if pushed against the hot metal pot.

Option 2: Hot Soapy Water

Wash parts that come into contact with breast milk immediately after each use in hot soapy water. Rinse each part very thoroughly for 10-15 seconds. A soap with a grease removing agent is best.

Option 3: Isopropyl Alcohol

You can also clean cup and tubing parts using isopropyl alcohol. Be sure your Freemie parts are COMPLETELY dry before using them. Isopropyl alcohol can be dangerous if not dried all the way.

Any alternative cleaning methods are not recommended (e.g., UV sterilization, steam bags, dishwasher) and can cause the system to malfunction and/or void your product warranty.

Additional Tips

  • Store Freemie parts dis-assembled; coil tubing loosely
  • Start each pump session with clean, dry parts
  • Inspect tubing and parts before and after each session for mold, milk, or damage
  • Replace soft silicone duckbill valves every 2-3 months
  • Always carefully inspect and replace damaged barriers for closed system cups