Everything went extremely well. I purchased the $69 Big Deal 400 sq. ft. pressure wash. I called to make an appointment, and they were available the next day. They arrived on time and were very pleasant. The two concrete pads in the back yard were fairly new and cleaned up very nicely. The sidewalk in the front is about 33 years old, and in addition to the dirt, had some paint and staining. The sidewalk in front was DIRTY, old concrete before they washed it, and was CLEAN, old concrete when they were done. The cleaning made a HUGE difference. Most of the old paint and stains didn't come up, but guess what, folks? This is a pressure washing with plain water, not a chemical bath. And, they told me before they started that pressure washing wouldn't remove most of the old paint and stains. There are other processes that will take care of some of the old paint and stains, but some will be there forever, and can be eliminated only by covering the stain with new concrete stain or paint. (Or replacing the concrete.) The pressure washing I received was exactly as I expected. If you expect your old, stained concrete to look like new concrete with a simple pressure wash, you will be disappointed.