The presence of chlorine in a drain cleaner means that the product contains an active disinfecting and cleaning component, most often based on sodium hypochlorite. This substance chemically decomposes organic impurities that are common causes of pipe blockages, such as hair, grease, food scraps, or soap scum. Simultaneously with dissolving the impurities, chlorine also acts as a powerful disinfectant. It effectively destroys bacteria, mold, and other microorganisms that multiply in drains and are a source of unpleasant odors. The use of a cleaner with chlorine thus ensures not only the mechanical clearing of the drain but also its hygienic cleanliness and the removal of odor at its source.