
I bought them to mix baby food. I had high expectations, it was my first mistake. I've been making formula for my baby for a few months now. I use a Nalgen bottle and at first I had nothing in it, when I shook it it was still lumpy. So I took a metal ball out of my husband's protein shaker and used it. This worked pretty well, but I have 2 bottles of Nalgen that I use and only 1 metal ball. I decided to try them because they had great reviews. I made the formula as I always do and when I opened it up it was filled with LARGE pockets of mixture that didn't mix at all. Upon closer inspection I took out the plastic jars and saw that the holes in the center were filled with powder mix π Luckily they float so I was able to fish them out with a spoon and spray the stuck mix with hot water and my sink (it really is strong and very hot water), I still had a hard time extracting the formula from the center. This. Needless to say I am very disappointed with this.

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