General information:
Sweep up large debris first. Absorb any oils or gas with commercial absorbents or cat litter.

Tools & chemicals:
Medium to stiff broom, degreaser or heavy duty cleaning chemical, hose or pressure sprayer.

Sweep up the absorbent before proceeding. Then hose off the driveway. The less debris that is left on the driveway, the easier it is to hose off. A broom and hose can be used for any kind of driveway (concrete, stamped concrete, brick, asphalt, aggregate stone). You can use specialized products, which narrow the water stream from a regular hose in order to give a stronger directional spray. For stained or heavily soiled driveways, use a stiff or deck type brush and general detergent and water to scrub the driveway before hosing. You can use a stronger ammonia type detergent and water or for extra heavily soiled driveways, or you can use a TSP mixture.

Environmentally friendly method:
Use a pressure sprayer, which will eliminate the need for soap or at least reduce the need. It should be noted that the higher the pressure from the sprayer, the higher the possibility of removing the driveway sealant. Using less than 1500 PSI on the pressure sprayer should be adequate to clean the driveway without removing the sealant. Also, watch that you don’t further damage any crumbling concrete by using the pressure sprayer directly on the area.

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