PROBLEM TO BE SOLVED: To provide a cockroach repellent coating material comprising an aqueous solution of tungsten suboxide.SOLUTION: Provided is a coating material that has a cockroach repelling effect and can be applied to places where emphasis is placed on the appearance by applying to cockroach intrusion routes or the like or applying to places where cockroaches live, a dry powder itself of a hydrous tungsten suboxide substance represented by WOn-(H2O)m[1.5
