FIELD: construction.SUBSTANCE: device comprises a holder suspended onto a toilet edge and at least one spare reservoir for an active substance fluid in the holder, besides, the spare reservoir has at least one outlet hole, through which the fluid may be released into the flushing liquid. The spare reservoir is protected against ingress of the flushing liquid into its inner part, and its outlet hole is arranged so that only the fluid is released. At the same time the outlet hole in the position of application is arranged at the side of the bottom, and during every process of flushing, the fluid is partially released from the spare reservoir into the flushing liquid. On the holder there is a distribution element provided in the form of a plate, and this element has an area for supply of the poured flushing liquid during flushing. The inner part of the spare reservoir via an outlet hole with the intermediate arrangement of the device preventing free flow of the fluid is permanently connected to the distribution element. The device also comprises at least one functional chamber for placement of a substrate material that emits an aromatic substance, besides, the chamber and the substrate material are made so that the flushing water may arrive into the chamber, contact with at least a part of the substrate material and again be released from it. The chamber mainly fully surrounds the substrate material, and the flushing water may arrive to the chamber and leave it, i.e. the chamber may be flooded, and the substrate material is retained in the chamber, and the gaseous emission of the substrate material may be released into environment. The device also comprises at least one facility to forward the flushing water into the chamber so that during each startup of the flushing water flow the chamber is flooded with the flushing water. Besides, the chamber has a hole directed towards the facility, holes at the side of the bottom and/or holes in the side surface for discharge of