If heavy deposits of dirt, grease, oil, fat, or wax are present on the concrete, then application of ACRtec Emulsifying Cleaner is required. For extremely heavily soiled surfaces use ACRtec Emulsifying Cleaner undiluted directly on the surface. Apply the product using a pump-style sprayer. Apply a liberal coat of product to ensure complete coverage. Using a scrubbing-type brush, scrub the surface of the concrete to loosen and suspend the dirt and oils. As a supplement to the scrubbing brush, a pressure washer may be used. Once the entire surface has been scrubbed and dirt and oils are suspended, removed then begin rinsing with clean water. After rinsing the surface, visually inspect. If heavy deposits of dirt and oil are still remaining, repeat the application of ACRtec Emulsifying Cleaner.