The present invention relates to a pesticidal composition and a pest control method which have an excellent efficacy in controlling pests. The pesticidal composition comprises an ester compound of Formula (1): wherein R and R are each independently selected from the group consisting of hydrogen atom methyl group trifluoromethyl group and chlorine atom and R is hydrogen atom methyl group or methoxymethyl group a glycol ether and water wherein the glycol ether content is from 10 wt% to 50 wt% and water is from 20 wt% to 85 wt% of the total amount of the composition.