Doff Natural Path and Patio Cleaner, Simply dilute with water and apply with a watering can or sprayer to the surface to be cleaned and leave it! There is no need to rinse or scrub. Go and get on with something else and you'll start to see results in 1-2 days and it will continue to do its stuff for up to 2 weeks and its effects will last for up to a year!
Eco friendly outdoor cleaner
No scrubbing or rinsing required
Use on many outdoor surfaces
No harmful residues