Lisa - I forgot in my previous post to say that I think it was in BabyLove that I read you don't have to sterilize the bottles after 6 months, but in another book I read that you should sterilize until 12 months. I guess it is your call (sorry, I don't use bottles).

The thing is that I don't sterilize Eleanor's drinking cup or her spoon or the bowls I feed her out of, so I think that is the reasoning behind not sterilizing after 6 months, because the other things we are using aren't sterilized.