The invention provides an
acaricide for treating sarcoptes suis. The
acaricide consists of
fenvalerate,
spirodiclofen, a cosolvent, a surfactant, a transdermal agent, a pour-on solution and
ethanol, wherein the cosolvent is
ethyl acetate; the surfactant is Tween-80 or compound
phosphate ester; the transdermal agent is
menthol; the pour-on solution is
tangerine peel active principle acetate. The cosolvent is dimethylbenzene, and the surfactant is the Tween-80. The major component of the
acaricide is 20% of
fenvalerate which is mainly used for tagging out sarcoptic mites and
blood sucking insects and has the functions of
stomach poisoning and dispelling. Medicaments enter the nerve systems of mites after being contacted with the mites, so that the mites become highly excited, shake, rapidly turn to general
anesthesia and
paralysis, and die finally. Thus, the acaricide can be used for killing the sarcoptes suis, and has good killing effects on lice, fleas, ticks, horseflies, mosquitoes, flies and various ova.