What are the good hotel insecticidal methods?

(1) According to the climate characteristics and the law of day and night activities of pests, choose the favorable time to apply pesticides. (2) According to the harmful parts of pests, choose different drugs and different application methods to make the drugs delivered in place. For pests that harm the roots, apply chemicals to the roots or sowing ditches; For pests feeding on the back of leaves, spray the liquid medicine on the leaves. ...