Red clay removal is a common issue when pressure washing outdoor surfaces. This stubborn clay can be difficult to remove with water alone, which is why many professionals offer an add-on service using specialty chemicals. These chemicals are specifically designed to break down the clay and make it easier to wash away, leaving your surfaces looking clean and fresh. So, if you're struggling with red clay stains on your outdoor surfaces, consider adding a specialty chemical treatment to your pressure washing service for a more thorough clean.