Technical Problem: To provide a composition for aerosol having an excellent pests control effect. Solution to Problem: 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° C. or higher and a propellant, and the content of the organic solvent being 10 to 30 wt % of the total amount of the composition.