I think the official response is credible, because McDonald's has a very strict system on the preservation of raw materials, and it also has certain requirements on the storage temperature and humidity. In the process of making hamburgers, it will be fried at high temperature. In this case, all the bugs can be killed, so it is unlikely to be carried by the hamburger itself, because the lady said that she found it after eating the leftover hamburger for several hours, so it may be because the temperature is high in summer and the taste of the hamburger is too fragrant to attract.

In fact, McDonald's is very strict about the management of raw materials. For example, if something falls on the ground, it will be thrown into the trash can immediately, and it will not be used again or given to customers. But if you find that you have taken it wrong, you will not sell it to another customer, but throw it directly into the trash can. The reason why McDonald's has been so popular for decades is mainly because it is clean and the eyes of consumers are sharp. If it is unsanitary, everyone can find it.

But to be honest, I think there is nothing wrong with hamburgers, but the box of hamburgers is not necessarily so. I packed it and took it away when I was eating in the canteen, and I found bugs in the lunch box. Later, I thought it shouldn't be in the rice, but more in the boxes, because these boxes were left for too long, or improperly stored, which led to insects in the summer when the temperature was high.

But as a restaurant, you should not only ensure the safety of your raw materials, but also ensure the safety of the boxes containing food. After all, no matter how clean your ingredients are, you will lose your appetite when you see bugs in the box. Therefore, McDonald's still needs to make a clear investigation on this aspect. Where did the bugs come from? By monitoring the stores involved, we can know whether they were brought out of the store and get a good understanding of the storage of some materials in the store.