Pressure Washing
Not all concrete stains come off the same way. Blasting every mark with plain water wastes time and can leave the concrete looking blotchy. Match the treatment to the stain and you get a far cleaner result.
Fresh oil should be soaked up with cat litter or cornstarch first, never spread around with water. Older, set-in stains need a degreaser worked into the surface and given time to dwell before rinsing. Concrete is porous, so deep oil sometimes needs two passes.
Rust from patio furniture, rebar, or fertilizer will not budge with pressure alone — it needs an oxalic or specialty rust remover. Avoid generic acid products, which can etch and lighten the surrounding concrete.
The green and black film on shaded driveways is organic growth, and the reddish-brown blotches under trees are tannin leached from leaves. Both respond best to a cleaning solution plus a broad, even pressure-wash pass rather than a narrow, gouging tip.
A surface cleaner attachment gives the uniform, stripe-free finish that a handheld wand rarely achieves, and pros carry the right chemistry for each stain. If your driveway has a mix of oil, rust, and mildew, it's usually worth having someone like the Gulf Coast team we recommend in Pensacola handle it in one visit instead of buying four products that half-work.