Karcher's revolutionary new SoapPacs offer the easiest way to use detergents with any pressure washer. These self-dissolving SoapPacs are pre-measured to make sure you use just the right amount each time. Our Concentrated Deck & Patio Cleaner enables your pressure washer to more quickly and thoroughly remove dirt, grime and soil matter (mold and mildew) from most wood decks and patios, as well as other outdoor surfaces made of wood, including fences, playground equipment, lawn furniture, etc. Contains 12 SoapPacs. Makes 3 gallons of full strength, ready-to-use Deck & Patio pressure washer detergent. 100% biodegradable. Videos demonstrating how to use SoapPacs are available in our Video Library.