Karcher Wood Cleaner can be used with all Karcher pressure washers whether your unit is designed with a Plug 'n' Clean system or a suction hose and filter. This powerful solution can be used to clean treated or untreated water-resistant wooden surfaces. Karcher's detergents have huge advantages not just for cleaning around your home but for the environment too. No aggressive tensides or ingredients that are considered harmful such as mineral oil and palm oil are used. All tensides used in Karcher detergents are biodegradable and many ingredients are obtained from natural resources from coconuts to beeswax. The bottle your detergent comes in is made from 45% recycling material and is 100% recyclable.