Remove Dirt and Stains from Driveways Effective driveway cleaner and block paving cleaner for best results when pressure washing driveways. Dilute at a ratio of approx 1 to 4 or 1 to 5 to create 4 to 5 litres of cleaning fluid (which will cover approx 25 m² of paving) Dampen surface, then apply product by either sprayer or watering can. For best results, once applied, work into surface with a stiff broom and leave for 20 minutes, then clean surface normally with pressure washer.
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