Bests & Worsts Reviews from Amazon

I love these for my toddler. I am a believer that no sippy cup out there is "immune" from mildew and mold growth and thought this would be better than others because all the pieces easily come apart. However, where this is prone to mildew growth is very difficult to clean, imo. And I don't use these for anything but water. The mouth piece needs to have an easier design for cleaning and prevention or should come with a special tool to get in there.