They are very time-consuming to wash and you have to clean every part well because otherwise they collect milk. Even the top part that connects to the tube needs to be brushed inside its holes because a lot of dirt gathers there. They also get mold easily. I changed the tube and the other part and the connecting piece, but still mold forms. With my second child, I changed bottle brands so they would wash more quickly and they are just fine.

We have tried other bottles from well-known companies as well as from the same company with the wide mouth, but none accepted like this one. It is a bit time-consuming to clean compared to other baby bottles, but if you soak it in warm soapy water after each feeding, it is a quick process. Tested with both formula and breast milk

It loses a little milk when mixing, but it's okay because we accepted it right away since we started with Dr. Brown's from the first day!!

I deduct one star only for the pink. Do not get it. Prefer the green. I have both the pink and the green and I use them simultaneously for a year now and for some reason the pink collects excessively more yellow residue in the valve, which is already difficult to clean. I don't know if the material, due to its color, has a different affinity than the construction, but the difference is significant.

Overall, the valve is worth it because we haven't had any colics even once. Of course, we are a very small sample, it could have been a coincidence.

It's worth it, but not the pink.