Examples speak louder than words. Eating the leftovers in the trash can by yourself is well-intentioned. However, using leftovers in public places to combat waste and promote thrift will inevitably cause some doubts. I think it's better to use kung fu in peacetime and improve the catering service level in the canteen, such as "half bowl of rice", "half dish", "weighing dish" and "prize-winning CD" ... these are all effective experiences and practices that can be copied and popularized.

When their children waste food, parents can educate their children in this way, although it can shock their hearts to some extent and make them feel guilty about their food waste. However, parents' avoidance is somewhat exaggerated. After all, children nowadays are more sensible in most cases. Parents can fully explain the importance of cherishing food to their children, point out their mistakes in wasting food, and also play a good role in educating their children.

The reasons why children waste food are complicated and need specific analysis. It can't be simply attributed to the fact that children don't know how to save. If the child is full, or the food is not delicious, it is harmful to the child's physical and mental health to set an example and force the child to finish lunch.

In fact, the effect of eating garbage can leftovers in public places is not as remarkable as expected. Similar practices have a long history, but most of them have come to nothing, and they have never been effective empirical practices.