Harpic Flushmatic is an in the cistern solution providing continuous cleaning with every flush. Its blue action contains germicide that cleans and protects against germs. Lasts up to 1 month depending on usage. Distributing the liquid across the bowl, it helps you maintain a hygienic and deodorized toilet and prevents the build-up of stains giving you a continuous clean toilet. Harpic FlushMatic helps to clean with every flush.