The DSRU is a unit that keeps your toilet bowl clean and free from limescale. The unit must be attached to the pipe, where water flows from the flush pump to the toilet. As the water is pumped towards the bowl, it is enriched with the disinfectant. The latter does not allow limescale to be created, it colours the water (green or blue) and deodorizes. Each unit is supplied with two tablets, æMarineÆ (blue) and æPineÆ (green) scent respectively. The tablets are also sold separately, but the DSRU is designed to fit any tablet in the market smaller than 30x30x40mm. The DSRU is very easy to install, requires minimum maintenance and features discreet and compact design.