Tired of germy toilet rim blocks? Introducing Duck Fresh Discs Marine, the innovative toilet cleaner that fights stains and prevents limescale buildup. This starter pack includes a holder and a 36ml marine-scented gel refill. Simply stamp the gel disc under the rim for a fresh, clean toilet with every flush. The unique formula reaches where rim blocks can't, providing 24/7 fragrance and lasting up to 7.5 weeks. Keep your toilet sparkling clean and germ-free without the mess!