Any pressure washer can clean a hard surface like concrete, but it takes forever, and if you move the nozzle too fast or too slow, you wind up with streaks and striping. However, that is not the case with this whirlybird-style surface cleaner from Briggs & Stratton (No. 6178). Snap it onto the end of your pressure washer and put it to work cleaning dirty concrete.
As soon as you pull the trigger, the cleaner lifts off the surface and floats like a hovercraft. Just push it along at a steady pace and let it do its job. The spinning jets blast a clean, uniform 14-in.-wide swath, and the brush skirt prevents damage to the grass edging, flower beds and walls. You can clean an entire walk and patio in less than half the time it takes with a regular pressure washer nozzle. And you'll get much better results.
Use the surface cleaner on horizontal and vertical surfaces like concrete, brick, stone and pavers. However, if you wish to use it on asphalt, wooden decks, fences or siding, you'll have to test it first. It's very aggressive and can damage softer surfaces like these.