I don't do this for a living, but I figured you guys that do could help me out. I did my driveway and sidewalk and had a hard time not blowing mud every where from the expansion slots left in the driveway. Most of the wood is gone and they are filled with dirt and debris. I tried to just get close enough to clean up to it, but still managed to make a mess. I have a little green on the side of my house and wanted to wash it too, but I have weep holes in the brick and did't know if you guys washed around that or did something different to get that clean. Thanks for any help.