Karcher Multi-Purpose Cleaning Detergent Soap Cleaner for Pressure Power Washer, 1-Quart The Karcher Promise: Cleaner. Quicker. Best-in-class cleaning performance. Karcher detergents are specially formulated to work in tandem with your pressure washer to help you clean more quickly and thoroughly Highly concentrated, makes up to 5 gallons of ready to use detergent from one quart of concentrate Perfect for cleaning outdoor surfaces such as decks, driveways, sidewalks, stone, brick and more Biodegradable. Made in the USA