One common complaint is how to remove the lines of stains left on the concrete after pressure washing. Those lines are usually caused because you get tired and don't take as much time as you started.
The best solution to this problem is to use a turbo nozzle that rotates the water, cleans a bigger area, and does not leave lines.
We also recommend a Turbo nozzle for cleaning Vinyl siding because a high-Pressure Washer can slice through Vinyl siding if the wrong tip is used.