1 bucket filled with clear water, 1 with normal water and shampoo. You put yout glove or sponge or whatever in the shampoo, clean 1 panel, and dip it in the clear water bucket. That way, the dirt, rocks, and small debris are removed and are not rubbed back onto the paint, as 97% of pakistanis do. It creates swirl marks and ultimately degrades your paint ( if you use a used kapra )