Cement, Limescale & Grout Residue Remover for Interior & Exterior use For glazed and un-glazed ceramics, slate, quarry tiles, brick, terracotta & acid resistant natural stones. A rapid action cleaning agent for removing cement residues, grout stain, efflorescence and other similar deposits from glazed and unglazed ceramics, slate, quarry tiles, brick, terracotta, and stone. May be used in dilute or concentrated form. (Do not use on Limestone, marble, or other acid sensitive surfaces).

In mild cases and on absorbent tiles: Dilute 1 part Grout Stain Remover in 4 parts cold water. Apply with a cloth or sponge wrung out in the solution. Wipe off thoroughly with a clean damp cloth.
In more severe cases: Dilute 1 part Grout Stain Remover in 1-part cold water. Apply liberally and spread over surface of tiles. If necessary, agitate with a nylon scrubber and leave to react for five minutes, keeping wet with additional Grout Stain Remover solution. Mop up and rinse thoroughly with clean cold water.
In extremely severe cases: Use undiluted and agitate with a nylon scrubber or mechanical scrubber if necessary. Neutralise treated surface with clean cold water after use.
Please Note: Always rinse surfaces thoroughly with clean cold water.