닥터 브라운스 벤트 청소 브러시

The bristles slide right into those tiny internal channels without bending, which was my biggest worry. My bottle parts finally feel truly clean after every wash instead of just rinsed.

I was struggling to get the narrow vent channels clean until I tried these; the tiny bristle design reaches every bit of residue. They fit perfectly into the openings and make the whole cleaning process so much quicker.

Finally, a brush that actually fits through those tiny vent parts—I can see the gunk it's pulling out now. My bottle parts are drying spotless without that sour smell.