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The yogurt does not leak around the screw top.
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The screw tops aren't tight and leak and the red cap transfers red dye to the cap head
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Very thin plastic walls and the screw tops cannot really be tightened much -- they will instead just rotate forward and loosen back up as you turn
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The screw tops don't seal completely
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But I wouldn't care, since the screw tops would likely just "fly off" in casual use
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So dog that the screw top literally can just pop right off
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I love the little red caps on these compared to my 250ml screw tops that always seem to leak on me
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The screw top was very small, and unless you have a steady stream, you will make a mess
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The bottle works fine, once you are able to screw on the not terribly smooth screw top
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The tops do not stay on, as though the threading is not raised enough to keep the screw top securely fastened.
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The screw tops can take a great deal more pressure, as well