Every day when I go home, I can see five or six wasps by the window. If I kill them at night, I will have them again during the day. Did I build a nest in my house? What should we do?

According to the description, there may be a hornet's nest near your home. You can look for it. Pay special attention to corners, under eaves and near doors and windows. If you can't find it at home, look outside. If you can't find it outside, just look at the surrounding buildings and trees. If you are careful enough, you can usually find it. If you find it, you can usually cover the nest with a garbage bag and take it off. Be careful not to be bitten by wasps. If the nest is too big or afraid to deal with it, it is recommended to contact the emergency rescue office and not to deal with it rashly.