You should never attempt to convert regular Dawn dish soap into a power washer solution or put it inside a pressure washer soap tank. Household dish soaps produce excessive, unmanageable suds that can clog or damage internal pumps, and they leave a sticky chemical film on exterior surfaces that attracts airborne dirt rapidly. Furthermore, dish soap can strip protective exterior finishes and harm landscaping plants, meaning you should always use commercial pressure-washer-safe detergents instead.
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