Freshens your bathroom with a refreshing Marine scent. Powers through tough stains. Manufactured using renewable energy. Duck 5-in-1 Marine kills 99.99% of germs and removes limescale from your toilet, both above and below the waterline. With Duck's unique bottleneck design, it can easily reach right under the rim, giving your toilet a thoroughly hygienic clean with minimal effort. What's more, it's perfumed with our Marine fragrance, eliminating odours without masking them, giving your bathroom a long-lasting fresh scent.