What surface's are you trying to clean?, concrete, stone etc.[/Cement pavers. they look awful and the house is only 2years oldSpoke to a guy today and he mentioned using a Orbot machine with a wire brush circular disks. Dont mind investing in the kit but need to know if it works first.Literaly thousands of driveways here in Johanessburg need this service.Cmon guys find me the solution please.quote]