Oil and grease treatment is different from routine pressure washing because petroleum, cooking grease, hydraulic fluid, and other contaminants can penetrate below the visible surface. Concrete porosity, stain age, repeated leakage, previous products, heat exposure, coatings, and existing damage all affect the result.
Clean Surface uses a staged approach that may include compatible chemistry, dwell time, agitation, hot water, extraction or recovery, rinsing, and repeat treatment. The exact process depends on the likely contaminant and whether the surface is bare concrete, coated, sealed, painted, paver, masonry, or another material.
The responsible promise is improvement—not automatic disappearance. Once oil has migrated into porous concrete, a remaining shadow can return or remain visible as the material dries. We explain that possibility before treatment and separate stain work from the price of standard surface cleaning.