I always thought you had to throw away formula after 1 hour and breast milk after 2 hours.
However, on the side of the Aptamil box it states discard as soon as possible, always within 2 hours.
Midwife says she thought it was 2 hours, but her daughter says 1 hour.
Searching on the net I'm getting all sorts of answers, from immediately to 3-4 hours!! One site did say 1 hour if your baby had touched it, and 2 hours if untouched, which seems to make sense.
I didn't have this problem with DS1, he took what he wanted and wouldn't go back to it. DS2 is a little and often man!!
So what do you personally do?