Acid Free Washroom Cleaner Specialised non-acid cleaner formulated for use on marble, granite, limestone and other sensitive stone. It is also suitable for most other bathroom surfaces, including glass. The product has been developed for the removal of calcium haze, lime and soap scum. Specific application includes complete heavy-duty surfaces cleaning, floor cleaning and spot cleaning. It can be used with an Oates non-scratch white scour pad to restore and revive surfaces.