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防虫剂种类较多，但不掺有化学品的纯植物性防虫剂并不多。所谓植物性防虫剂，是指具有防虫作用的植物制剂。使用植物性防虫剂与化学防虫剂相比具有很多优点：首先是某些植物性防虫剂的有效成分毒力较强、效果突出；其次是使用安全，对人畜没有毒性或毒性较小；第三，防虫物质
There are many types of insect repellent, but not many pure plant-based insect repellents without chemicals. The so-called plant insecticide, refers to the role of pest control plant preparations. The use of plant-based pest control agents has many advantages over chemical pest control agents. First, the active ingredients of certain plant-based pest control agents are highly virulent and give outstanding results. Secondly, they are safe to use and have no toxicity or toxicity to humans and animals. Thirdly, , Pest control material