PURPOSE:To provide the titled mildew-proofing agent containing camphor and diphenylene oxide as active components, having high safety to human body, exhibiting excellent mildew-proofing effect for a long period, and applicable to a body or place unsuitable to the direct treatment. CONSTITUTION:Camphor is combined with diphenylene oxide acting as a synergist, and the mixture is used as an active component of the titled agent. The amount of diphenylene oxide is preferably 1-10wt% based on camphor. Both compounds are mixed with each other or packed separately in air- permeable nonwoven cloth, etc., and placed close to each other. If necessary, the agent may contain binder, colorant, fungicide, insecticide, etc. Diphenylene oxide used as the mildew-proofing agent is a colorless crystal having a melting point of 83 deg.C and a boiling point of 287 deg.C and high safety and stability.
