The invention concerns a WC brush comprising a section (3) which takes the form of a disposable brush. The brush section is detachably held on the handle (1) off which it can be pushed. To that end, the handle (1) comprises an internal push-rod (14) which is displaceably guided in a continuous longitudinal bore in the handle (1). When the WC brush has been used, the brush section (3) can be pushed off by pushing the push-rod (14) inside the handle (1) downwards such that it pushes the brush section (3) out of the device holding it on the handle. The disposable brush section (3) is flushed through the WC into the drainage system in the same way as WC paper. The storage device (7) for the disposable brush section (3) consists of a container (8) which is open at the top and has a weighted base (9). The disposable brush sections (3) are stored stacked in the container (8).