In Stock Cleaning Products Duck In Cistern Blue 2 Pack 50gm x 1 Duck 735264 kr42.74 Duck Blue Plus in Cistern has a powerful cleaning action that hygienically cleans your toilet, removes germs, freshens and blues, leaving your toilet clean and fresh from top to bottom. - Hygienically cleans. - Removed germs. - Freshens. - Blues. - No mess block. - Suitable for septic tanks. Add to basket