There are several ways to kill flies:

1. Family hygiene is the most critical aspect. Try to clean every corner of the family to avoid some sanitary corners that breed flies.

2. Only after cleaning can the environment where flies breed be completely eliminated in the family environment.

3. Food that can't be eaten at home should be put in the refrigerator in time so as not to attract flies.

4. You can use sticky fly paper or fly paper, which is very effective and easy to use. Put the fly paper in the kitchen, where there are more flies.

5. Fly swatter can kill flies at any time, and it should be cleaned frequently.