Acaricides, medicaments used to prevent and control phytophagous mites are called acaricides. The early acaricides used were mostly sulfur and inorganic sulfur preparations. Generally speaking, they can only kill mites but not insects. There are many kinds of insecticides that have the effect of killing mites, but their main activity is to kill insects and cannot be called acaricides. Sometimes they are also called insecticides and acaricides. . A class of pesticides used to harm various plants, storage materials, livestock and other harmful organisms in the arachnids. Among the acaricides, some varieties have high activity against active mites (adult mites, young mites, weak mites), but have poor or even ineffective activity on eggs; some have high activity on eggs, but have poor effect on or dynamic mites; Both of the species can be killed.