Tiger stripes are a choice. So is even.
Those overlapping arcs you see on driveways around the neighborhood are wand marks: someone cleaned strips at uneven distance and pressure. The right tool is a surface cleaner, which works like a floor buffer for concrete and leaves one uniform finish. Edges and corners get detailed by hand.
Stains get treated by what they are. Oil and grease want a degreaser and heat, rust wants its own chemistry, and organic growth in shaded strips wants a pre-treatment so it does not ghost back in a month. Paver driveways get an extra consideration: aggressive pressure blows the joint sand out, so they get cleaned with the joints in mind, and if the sand is already going, re-sanding and sealing is the fix that makes the cleaning last.
Got a paver driveway?
Cleaning a paver driveway without dealing with the sand joints is half a job. If your joints are washing out or growing weeds, read about paver driveway sealing, which includes re-sanding with the correct joint sand before any sealer goes down.
Straight answers
The questions I actually get, answered the way I answer them on the phone.
Can you get the oil stains out?
Usually most or all of the stain, depending on how long it has soaked in. Fresh spills come out well with hot water and degreaser; old, deep stains lighten dramatically but may leave a shadow. I will tell you which you have before we start, not after.
Will pressure washing damage my concrete?
Concrete handles pressure well when the tool and technique are right. Damage happens when someone holds a narrow tip too close and etches lines into the cream. The surface cleaner keeps the pressure even and at the correct distance the whole time.
How often should a driveway be cleaned?
About every year or two in this climate, sooner if it is shaded or catches sprinkler water. Sealed paver driveways stay cleaner longer, which is one reason to seal them.