My ex girlfriend bought me an Avent bottle a year ago for Christmas. It leaked. I bought an Avent Magic Trainer sippy cup a while ago. It leaks. I tried putting a brand spanking new bottle teat in the sippy cup. It still leaks!
What on earth am I doing wrong with this stuff? I tried using different amount of torque on the screw-on lids, but to no avail! It keeps leaking through the gorram threads.
Is it just Avent, or amidoinitwrong? Please help guys, and just for fun, could you tell me what brands you use for your bottles/sippy cups?