verminicide

例句：

1. 1. The farmers used to use a mixture of salt and water to kill vermin.
   过去农民们会用盐和水混合物来杀灭害虫。
2. 2. The government has introduced stricter regulations on the production and sale of pesticides.
   政府对农药的生产与销售实施了更严格的规定。
3. 3. The new insecticide is more effective than the old one, making it easier for farmers to control pests.
   这种新的杀虫剂比旧的更有效，使得农民更容易控制害虫。