A sanitary agent for treatment of a sanitary appliance includes a solid or semi-solid active body, designed to adhere to a wall of the sanitary appliance and including a treatment compound having at least an active element for treatment of the sanitary appliance. The body has an external surface thereof covered by a water-soluble film. In this way, the sanitary agent can be manipulated by hand for application thereof to a moist ceramic wall of a sanitary appliance to be treated, without the users hands entering into contact with the components of the sanitary agent itself. Furthermore, any undesired loss of the components of the sanitary agent is avoided these can be due to deformation of the sanitary agents before use thereof, displacements thereof and/or any dripping. A method for applying the sanitary agent for deterging, disinfecting and/or perfuming the sanitary appliance is also provided.
