Hard Surface Cleaning
There are many types of hard surfaces that need cleaning. The first one that spring to mind is glass. It is also the easiest to clean because the surface of glass is very smooth. Other hard surfaces that need periodical cleaning are plastic, metal, wood, composites, blocks, bricks etc.
Although we walk on many types of hard surfaces that need cleaning we also use many different types of materials to build our homes and commercial building. All of these have hard surfaces that need cleaning periodically.
Using detergents does not help our environment. The best way to clean any external hard surface is with water. Under pressure water will clean almost any hard surface.