After the use of pesticides need to ensure indoor safety before entering. According to relevant information, you should leave the site immediately after using pesticides, and enter after half an hour, after opening the doors and windows to fully ventilate. In addition, different sources have emphasized that after spraying aerosol, people leave the room, close the doors and windows for half an hour to an hour before entering the room to open the window for ventilation [3]. These measures help prevent poisoning or other health problems caused by inhaling harmful substances. Therefore, after the application of pesticides, it is necessary to wait enough time to ensure indoor air safety.