If no one lives in these two days, you can buy some toxic pesticides (or very toxic pesticides) such as Didi Wei, soak all the sheets and quilts in hot water, dry the quilts, then spray pesticides on the whole room, including the dead corners, and then close all the windows, suffocating! Just come back in a few days and clean up the body of the bug, but because the eggs of lice can't be killed like this, they will be killed again every few days!