I got stopped in Florida for having a 250ml carton of soya milk. They said it’s too big, I told them it was for my son who’s allergic to dairy, they had a little chat together asked if I’d been through the scan machine thing which I had, swabbed the carton, swabbed my sons bag and then let us take it. In Heathrow i had ordered 3 cartons for collection from boots, he drank one on the flight and I was allowed to take the other 2 through into the US mit questions. X