Using a surface cleaner head is a great way to reduce overspray and mess when pressure washing. This one is well built with metal wheels; no dragging across the pavement all day. The only downside is that it does not wash the debris away from the washed area and the standing dirty water where you worked makes it a bit difficult to tell if you are done.
The Westinghouse 15" surface cleaner worked great! It's affordable and it made the pressure washing chore go much easier and faster. I would highly recommend this cleaner.