By Rachel Johnson, CNM, ARNP, CLC
This will depend on how often you’re using your pump, but as the rubber expands and contracts it will weaken over time and can effect your supply. In general, if you pump for half of your baby’s feeds or more, you want to change the flexible pump parts every 2-3 months. You may want to inspect them for any tears more frequently and change them if they are there. This includes duckbills, diaphrams, tubing, etc. The hard plastic pumps should not need to be change unless they are damaged or cracked.