what to use in power washer to clean the side of house without harming my garden
Liquid Dish Soap. Soapy water made from dish soap is a safe, all-purpose cleaner that will cleanse your porch without toxic chemicals. Dish soap wonât harm flowers, and is even used in homemade pest control sprays to keep whiteflies, aphids, scale and mites off the plant.A mixture of 3 tablespoons of dish soap combined with 1 gallon of water will safely clean the porch without harming surrounding plants.ctually, baking soda is beneficial in your garden and helps control powdery mildew naturally. An all-purpose cleaning recipe containing 4 tablespoons of baking soda dissolved in 1 quart of warm water will thoroughly clean the porch without harming the surface.