Here is a mock up we did on a Mall job we have scheduled. It is precast and has a lot of curves and rolls, and is very infested and dirty. The owners wanted to see a demo and flew out from California to check it out before issuing the entire PO. We used a heavy blend of Terra Wash and multiple coats of 3% mix to clean this. I will post more pics once we do the job, in early June. It is all night work, from 10:30 PM to 7:30 AM. We had an 80' lift for the mock up, but need a 135' one for the actual job. Lots of hose, tons of safety gear and shutting down streets and sidewalks, makes these projects tough, but profitable.