Hey guys I was at a job the other day day and the customer asked me to test clean his concrete patio. Its at a wedding place and they are pressurewashing it every week but it takes them hours because they have to go over and over it because they get lots of streaking. I cleaned 3 squares for them, 1 with just water and a hard surface wand, 1 I pre sprayed, and 1 I presprayed and ran over it with a crb with medium brushes on it. They opted to go with the just water cleaning so I went back and cleaned it yesterday. I still just used water but I used my spinner instead of the hard surface wand. I cleaned in both directions plus at the end I quickly went back over it all with the hard surface wand. This is what it looked like when it dried, I go back in the morning to redo it all but any suggestions are appreciated.