Highly concentrated and specially formulated for cleaning houses, buildings, siding, and other structures, it effectively removes environmental dirt, grime, algae, mold, and mildew stains. This concentrated formula makes up to 40 gal. of cleaning solution, perfect for heavy-duty cleaning jobs. Fast-acting and designed for tough pressure wash jobs, it rinses clean without leaving any residue. This phosphate-free and powerful formula cleans, brightens, and restores various surfaces including vinyl, aluminum, fiber cement, wood, gutters, roofing, brick, and stucco. Refer to your pressure washer owner's manual for specific instructions. For optimal results, start spraying from the bottom up, allowing the detergent to penetrate surface dirt for 1-5 minutes. Avoid letting it dry. Rinse the surface at high pressure with clean water. If you prefer using a foam cannon, the Karcher House and Siding cleaner can be easily applied by placing it in the foam cannon bottle. Adjust the foam cannon metering valve to your desired strength and follow a similar washing process as described above. For manual application, dilute the detergent by mixing 1 part with 39 parts water. Apply the solution to the surface for 1-5 minutes, ensuring it doesn't dry. Rinse with high pressure from the top down. Notes: Always test on an inconspicuous area first. Before starting, saturate any surrounding vegetation with water. Once cleaning is complete, repeat saturating vegetation.