Mix the product 1 part Wet and Forget to 5 parts of water - in a garden sprayer. (eg 1L Wet & Forget to 5L water)
Choose a cool dry day to apply it.
Saturate the dry surface with the product.
NO rain for the first 5 hours
Then, just watch it come cleaner - bit by bit as Mother Nature takes over. The weathering process gently takes the decomposing material away bit by bit without scouring the surface it has infested.
