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 Exterior House Cleaner enables your pressure washer to more quickly and thoroughly remove environmental grime and soiling from any house exterior. Excellent for use on brick, vinyl and aluminum siding, garage doors, awnings, downspouts, window screens, etc. Ideal for a variety of other surfaces around the home as well, including stone, concrete (driveways, sidewalks, etc.) and pool/spa surfaces. Contains 12 SoapPacs. Makes 3 gallons of full strength, ready-to-use Exterior House pressure washer detergent. 100% biodegradable. Videos demonstrating how to use SoapPacs are available in our Video Library.