HG escapes concentrated cleaner removes dirt from deep grout lines between the tiles. Yellow or brown marks that remain on the joints after treatment, are deposits and can be eliminated with HG cleanser for limestone deposits. Grouting compound blackened (mold) use HG remove mold, moisture and stains from atmospheric agents. Dilute concentrated leaks detergent HG with lukewarm water. Apply the product with a brush or hand brush. Leave briefly, rub vigorously with the brush and rinse with water. Half a litre of product is enough to a surface by 10-15 square meters.