Sale under lock and key, only with advice, unblocks and cleans drains and pipes thoroughly thanks to the strong protein and fat-dissolving effect, at least 2x more effective than products that do not require advice, especially suitable for sinks, showers, bathtubs, toilets, completely decomposes and eliminates hair and soap residue bad smells, proven for all drain materials, can be poured down the drain through stagnant water as it is heavier than water, enough for 2-4 uses, for toilets use 2-3 liters