• Duck Active Discs Marine contains 3 discs • Hygienically cleans the toilet with each flush, leaving a pleasant fragrance. • They are self-sufficient and do not require a plastic holder. • Gel technology with 360-degree coverage. • Removes stains and prevents their formation. • Uniquely shaped neck to better reach the toilet edges. • Removes lime scale, mineral deposits, and dirt rings. • Fresh and long-lasting fragrance. • Suitable for septic tanks. • Directions for use: Ensure the toilet is clean; align the large button on the gel holder with the holes in the handle; place the transparent end of the gel holder against the inner surface of the bowl; press the dispenser until the button clicks; pull the dispenser to leave a gel disc; replace the cap firmly; flush to activate the gel disc.