Duck® Deep Action Gel Marine sanitises your toilet, killing 99.99% of bacteria*. Removes soils and limescale/mineral deposits leaving your toilet clean with a fresh, long-lasting fragrance. It's uniquely shaped neck allows you better reach vs other toilet bowl cleaners**. *Use biocides safely. Always read the label and product information before use. **Based on lab testing on open rim toilets for cleaning under the rim. Passes EN1276 and EN13697.