I'm sorry but I don't believe the frozen food boxes story. If there were frozen food boxes LE would have taken them along with the other evidence in the car. So I doubt very seriously that whatever other evidence was found was empty or full food boxes.
I think that he is trying to say as little as possible while still giving the defense side of things. However, I have to thank him for giving us the info on the maggots.
We know the pizza box was empty, bet if, I that is a big IF for me right now, there were other boxes in the car, they were empty too.