Abstract: Provided is a liquid mouthwash that is capable of maintaining a bactericidal effect over a long period, and uses electrolyzed water that inhibits metal corrosion. The liquid mouthwash contains electrolyzed water having a positive oxidation-reduction potential, a menthol, an anionic surfactant, and a water-soluble organic solvent, and has a pH of 6 to 8. The electrolyzed water, and the menthol or one or more anionic surfactants are accommodated without coming into contact with each other, and are preferably used in a mixed state at the time of use.