03/09/2026
You’re not the only one who’s done a pump session at 3am and figured rinsing the obvious parts was good enough.
But backflow protectors? Those get skipped constantly — and they’re literally the barrier between your tubing and your milk.
When they’re not cleaned and sterilized regularly, moisture gets trapped, bacteria builds up, and that’s ending up in your expressed milk.
Even if you have a closed-system pump, check your tubing regularly for condensation, discoloration, or mold. Milk can still find its way into tubes — and once mold is in there, the tube needs to go.
✨ Backflow protectors need to be washed with hot soapy water and sterilized regularly — check your pump’s manual for exact guidance
✨ After every session, let all parts air dry completely before reassembling
✨ Spot moisture in your tubes? Disconnect them, swing the open ends to clear it out, and let them air dry fully before your next session
✨ Discoloration or visible mold in tubing = replace immediately, no questions asked
You’re already doing the hard work of pumping. A little extra attention to these parts keeps that effort from going to waste.
Hi, we’re Milk Guide — infant feeding specialists serving families across Indiana, Illinois, Michigan, Tennessee, Kentucky, and North Carolina with in-person appointments, plus virtual visits available nationwide. We accept insurance, and more than 90% of our families have no out-of-pocket costs.
DM us or head to the link in our bio for a free benefits check and to schedule your appointment.
