Anne,

The main reason I have heard to sterilize pump parts fresh out of the
packaging (unless it is marked as sterile packaging) is- ' The parts come from
the manufacturer clean but not sterile. Its unknown what kind of airborne
pollutant may have been in the factory that day or who may have sneezed as the
parts were going along the conveyor belt.'

In my mind to myself I also wonder if factory worker X washed his/her hands
after leaving the restroom before returning to handle those parts. And did
factory worker Y's child come home from daycare with Chickenpox or strep??

I rarely sterilized my own parts after I had commenced pumping but you can bet
the farm I sterilized the heck out of them before the first time I used them.

Cheryl L Tompkins CLC
Phoenix AZ USA