This product, formulated with a German recipe, is an efficient and convenient toilet cleaner designed to thoroughly clean the hidden corners of the toilet and tackle stubborn stains. No need for a brush—simply pour it in, wait for a moment, and then flush to remove limescale, black stains, and water rings. The formula contains chlorine, killing 99% of germs, eliminating odors at the source, and maintaining a fresh and clean sanitary environment. Additionally, the product effectively cleans the interior walls of the pipes, reducing unpleasant odors in the drain. With a safe formula that won't harm porcelain glaze, it can be used with peace of mind.