Go Ferrous was formulated to remove all types of rust staining from Patios, paths, and garden stonework.   Lawn Fertilisers contain iron sulphate. When accidentally spread on wet patios and paths they can leave small rust marks across your stonework. To remove, use Go Ferrous. Go Ferrous will also remove rust stains caused by BBQ equipment, metal pots and plants. Go Ferrous can be safely used on Indian Sandstone, York Stone, Limestone, Granite, and all other natural or artificial slabs, without destroying the surface. Does not damage the surface of the stone unlike more conventional aggressive acids, so can safely be used around the garden and washed into flower beds. Go Ferrous will not remove rust from metal. 2 Litre container will cover 10 SQM Directions 1. With the lid firmly in place, shake the container well before opening, to ensure no settlement has occurred during storage. 2. Apply to the surface by pouring or spraying, directly onto the offending area. A brush can be used to