Soft washing is a low-pressure cleaning method that uses a combination of water, bleach, and surfactant to clean and disinfect the exterior of a home. The bleach and surfactant work together to break down the dirt, grime, and mold on the surface of the home, and the water rinses it away. Soft washing is a safe and effective way to clean the exterior of a home, and it can help to prevent the growth of mold and mildew.