BPA? My Bottles?

As far as I know BPA is only in hard plastic bottles, not the drop ins as they are a more flexible plastic. Usually you can tell if they have a little triangle on the bottom and in the triangle there will be a number 7. BPA is an estrogen producing thing. They don't know what effects it can have besides making puberty come sooner in girls. Boys can get the estrogen and who knows what that will do. As far as I know it only happens when liquids are warmed in the bottles.