Quick answer
Use the specialized cleaner from the b.box + Lansinoh Replacement Straws + Cleaner set to scrub the inside of sippy cup straws, then rinse thoroughly with warm water. This routine removes residue and prevents mold buildup.
Why a dedicated straw cleaner matters
Sippy cup straws have narrow channels that dish brushes and sponges cannot reach. Without a proper cleaning tool, milk or juice residue can linger and promote bacterial growth. The included cleaner in the b.box + Lansinoh set is designed specifically for this task, with a flexible bristle head that navigates the straw's curves.
When to replace vs. clean
Even with regular cleaning, straws wear out over time. The set includes replacement straws, so you can swap in a fresh one when the old straw shows signs of chewing, discoloration, or stiffness. Use the cleaner daily, but replace the straw every few months or sooner if damaged.
How to clean b.box sippy cup straws step by step
- 1. Disassemble the cup: Remove the straw from the cup lid and separate any valve or silicone parts. Rinse all pieces under warm running water to remove loose debris. Checkpoint: Make sure the straw is fully detached — cleaning it while attached to the lid leaves hidden spots untouched.
- 2. Insert the cleaner into the straw: Take the specialized cleaner from the b.box + Lansinoh set and push the bristle end into one opening of the straw. Gently work it through until it emerges from the other end. Common mistake: Forcing the cleaner too fast can bend the bristles. If you meet resistance, twist the cleaner gently as you push.
- 3. Scrub inside the straw: Pull the cleaner back and forth through the straw several times, rotating it to scrub the entire inner surface. Focus on areas where the straw bends. Checkpoint: If the straw has a visible residue line, continue scrubbing until the bristles come out clean.
- 4. Rinse thoroughly: Hold the straw under warm running water while running the cleaner through once more. Shake out excess water and inspect the straw for any remaining debris. Common mistake: Skipping the final rinse leaves soap or loosened residue inside the straw, which can affect taste or hygiene.
- 5. Air dry completely: Place the straw upright in a drying rack or on a clean towel. Allow it to air dry fully before reassembling the cup to prevent mold growth. Checkpoint: Damp straws stored in a closed cup create a breeding ground for mold. Always dry before storage.
What you need
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b.box + Lansinoh Replacement Straws + Cleaner: Includes replacement straws for b.box and Lansinoh cups, allowing you to swap out worn or soiled parts quickly. Comes with a specialized cleaner to effectively remove residue. You get both a cleaning tool and spare straws in one kit, so you can maintain hygiene without buying separate items.
b.box + Lansinoh Replacement Straws + Cleaner
