Dr. Keddo Sanitary Crystals Bigsan 350-g Can

Decomposes faeces, prevents the formation of odours, dissolves incrustations, urine scale and limescale; application: toilets, faecal, flushing and waste water tanks; after use, the tank walls are absolutely clean. Very productive, as the crystals do not contain any water. Low priced and biocide-free. The can contains a measuring cup. Sanitary products from other manufacturers that are still in the tank also react with the crystals and the effectiveness of the crystals is thus lost. As soon as the incrustations, limescale etc. or residual amounts of other chemical cleaning products have been removed, the above information is no longer necessary!
Use biocidal products carefully. Always read the label and product information before use.