To provide a composition for aerosol having an excellent pests control effect.A composition for pest control aerosol comprising a compound of formula (1)wherein Ra represents a hydrogen atom or a methyl group, Rb represents a methyl group or a methoxymethyl group, an organic solvent having a boiling point of 220℃ or higher and a propellant, and the content of the organic solvent being 10 to 30 wt% of the total amount of the composition.為要提供一種具有優越之有害生物防治效果之氣溶膠用組成物。一種有害生物防治之氣溶膠用組成物,其包含:式(1)之化合物其中Ra示氫原子或甲基,Rb示甲基或甲氧基甲基;具有220℃或更高之沸點的有機溶劑;及推進劑;且該有機溶劑之含量是該組成物總量之10至30重量%。
