Overview

• Chip.de cites ÖKO-TEST and specialists who warn that many supermarket drain cleaners rely on strong alkalis that can corrode seals and plastic pipes, irritate airways and burden wastewater systems.
• Chemical products often only open a narrow path through the blockage, so the main plug remains and the clog returns more stubbornly.
• Recommended approach: remove the obstruction with a plunger or drain snake, then use bio‑enzyme cleaners regularly to break down organic films and prevent new buildup.
• For light kitchen clogs, a handful of salt followed by boiling water can flush grease deposits, and a dissolved dishwasher tab in hot water may clear food and fat residues, though both fail against hair or deep blockages.
• Prevention measures include hair strainers, keeping fats out of drains, occasional hot vinegar water and weekly bio‑enzyme dosing, with professional help advised for recurring clogs, multi‑room backups or persistent odors.