We had the same problem, and it was sooo frustrating. DH went back and read the enclosure that came with the bottles. In order for them to work properly, you aren't supposed to tighten the cap all the way. So we would tighten it, then loosen it up a little. We'd still check to make sure they didn't leak, but usually didn't have a problem once we figured it out. DS liked the Avents better than the Vent aire, adiri, and medela which we've tried, though he's become a boob snob and won't take anything but. HTH
Re: Leaking Avent Bottles?
Yep, and I found this site. This trick totally works for me! No more leaky bottles!!
https://mecrunchy.blogspot.com/2008/01/solution-to-avent-bottle-leak.html
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