How to Clean and Sanitize Breast Pump Parts at Home

Quick answer

Start by rinsing and scrubbing all parts with hot soapy water, then sanitize using steam, boiling, or a disinfectant safe for baby gear. Let everything air-dry fully before reassembling.

Step-by-step cleaning and sanitizing routine

1. Disassemble and rinse: Take apart all pump parts that touch milk — flanges, valves, membranes, bottles, and lids. Rinse each piece under cool running water to remove leftover milk. Common mistake: rinsing with hot water first can bake milk proteins onto the parts, making them harder to clean.
2. Wash with hot soapy water: Use a dedicated basin (not the kitchen sink) and wash each part with a clean brush and mild dish soap. Scrub all surfaces, including threads and crevices. Common mistake: using a sponge that's been used for other dishes can transfer bacteria to pump parts. Replace your brush or basin every month to avoid bacterial buildup.
3. Rinse thoroughly: Rinse each part under hot running water to remove all soap residue. Leftover soap can irritate baby's mouth or affect the taste of milk. Common mistake: rushing this step leaves a film that can clog valves and reduce suction.
4. Sanitize daily: Boil parts in a covered pot of water for 5 minutes, use a steam bag or electric steam sterilizer, or soak in a cold-water sanitizing solution according to the product instructions. Common mistake: boiling parts longer than recommended can warp silicone membranes and damage flanges. If using a chemical sanitizer, make sure it's labeled safe for baby feeding items.
5. Air-dry completely: Place all parts on a clean, unused dish towel or drying rack. Cover them with a clean cloth to protect from dust. Let them air-dry for at least 1–2 hours before reassembling. Common mistake: drying with a kitchen towel can reintroduce germs from the towel. Moisture is the top cause of mold in pump parts — never assemble while damp.

Products that help

• Dapple Baby Breast Pump Wipes, Singles, Fragrance Free: Dapple Baby Breast Pump Wipes are plant-based and formulated to remove tough breast milk residue without harsh chemicals or rinsing. They're a convenient option for on-the-go cleaning when you can't access a sink, but they should not replace a full wash and sanitize at home.

  

• CaviWipes HP Surface Disinfectant Wipes 160 Count: CaviWipes HP Surface Disinfectant Wipes are presaturated with hydrogen peroxide and are safe for use on breast pumps, offering a 1-minute contact time. These are ideal for disinfecting pump surfaces and countertops where parts rest, but they are not meant for cleaning parts that touch milk directly.

  

• Medela Breast Pump Vacuum Gauge: Medela Breast Pump Vacuum Gauge measures vacuum in mmHg and fits most standard flanges (27mm–24mm). Checking your pump's suction with a gauge can help you spot performance issues early, so you know when parts need replacing or cleaning.