These bugs often fly home from neighbors and the outside world. In other words, it was only accidental to appear at home at first. But once they appear, it's hard to drive them away. After finding them, the first thing to do is to take a bowl, exchange some salt water with the edible salt at home, sprinkle the salt water on the places where the insects gather, and then go to the supermarket to buy some pesticides as soon as possible.
Then spray pesticides inside and outside the home room, especially in dark and humid corners. After spraying pesticides, lock the doors and windows for half an hour to two hours, then go home and open the doors and windows for ventilation to discharge the smell of pesticides. Don't stay at home at this time. Now wait outside for ten minutes before coming in and cleaning the house thoroughly.
Because even if bugs only exist in your home for a short time, you can't confirm whether they lay eggs in your home. Eggs are hard to be killed by pesticides. At this time, it is best to clean the house first, and then spray salt water in the corner to destroy their living environment. Finally, remember to always open the doors and windows at home to breathe.
Don't think that bugs enter from the outside, you should close the doors and windows. With so many doors and windows, they just entered your house in large numbers, which should cause reflection. Insects generally like dark and humid environment. If a large number of insects enter the home, it is often the environment in your home that attracts them. Therefore, if you want to avoid them in the future, the best way is to clean your home regularly and keep it ventilated.