Go Ferrous by the Pario Black Spot Removal Company 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 rust marks. To remove, use Go Ferrous.
Safe to use on sandstone, limestone, granite and all other artificial slabs, without destroying the surface. Unlike some more conventional acids it does not damage the stone and can be safely used around the garden and washed into flower beds.
A 2 litre bottle will cover around 10m2, with a 4 litre bottle covering 20m2.
Follow the full application guideline on the bottle, but product can be poured or sprayed on, spread with a brush. Initially no fizzing or reaction will be seen. After 12 hours check and re-apply if neccessary. Darker stains will require longer dwell times. After rust has been removed, rinse with hot water.
2 litres, 4 litres