HG 183 PATIO CLEANERHG patio cleaner is a highly concentrated cleaner that has been specially designed for the cleaning of dirty and stained concrete, paving slabs and gravel.Direction of use:Wet the patio with water and brush away puddles.Dilute the contents of the bottle with 4 litres of water (1:4).With a scrubbing brush, apply the solution and scrub the area.Allow a few minutes for the product to work and rinse the surface thoroughly with water.