Back DIYLeroy MerlinSeptic Tank Treatment - 500mlR 80.00Leroy Merlin ยท checked 9 days ago View at Leroy Merlin AverageR 80.00Lowest seenR 80.00Highest seenR 80.00Last changeR 0.00First indexed26 Sep 2026RetailerLeroy MerlinPrice historyDescriptionDecomposes & drastically reduces smells of solids in Septic Tanks, Pit Toilets and French Drains.