PROBLEM TO BE SOLVED: To reduce chemical injury of an insecticidal bactericidal composition for home gardening containing an alkylbenzene sulfonic acid or its salt.SOLUTION: An insecticidal bactericidal composition for home gardening which contains an alkylbenzene sulfonic acid or its salt as an insecticidal bactericidal ingredient and a surfactant, is an aqueous formulation to be scattered without dilution and also contains polyvinylpyrrolidone as a chemical injury reducing ingredient for the alkylbenzene sulfonic acid or its salt.