脒类化合物作为杀螨杀虫剂，具有广谱、低毒、活性高的优势。
It has a broad spectrum, low toxicity and high activity when used as pesticide.
结论：天南星、湿大蒜及苦参煎剂具有较好的杀螨作用，天南星的杀螨效果优于2%甲硝唑水剂。
Conclusion: South star, wet garlic and bitterness has effective function to kill the demodex. the South star kill demodex better than 2% metronidazole water.
吡螨胺是一种新型、高效的吡唑酰胺类杀虫剂。
Tebufenpyrad is a new and high efficiency pesticide of pyrazole amide.
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