To provide a highly safe sterilizing tool that gives sterilization and purification effects in a short time leaving no residual of a sterilizing drug used, which is used for various bacteria and ticks breeding at floors, walls, columns, ceilings or furniture of various types of buildings and vehicles, and those breeding at the skin and hairs of humans and other animals.

Originally, iodine and iodine compounds are popular as disinfectants, and their safety and sterilization power have already been proved. This invention provides the highly safe sterilization tool that consists of a rotatable roller impregnated or coated with iodine or its compounds and then dried. This roller is used for the purpose of sterilizing or purifying the various bacteria or ticks at places where the application of conventional bactericides is inappropriate.