Genuine KARCHER Patio & Deck Cleaner Detergent Fluid - 500ml (Pack of 2) Capacity: 2 x 500ml -- Each bottle Makes upto 5 litres of detergent -- Low-foam cleaner for all water resistant wood and stone surfaces -- Reliably removes soiling such as moss, algae, mud and dirt from patio's decks, walls, fences and garden furniture -- Specially formulated for use with Karcher pressure washers –- Detergent pouches are light and space saving -- store folded up until you're ready to use, then simply add water Application: Open the 500ml folding canister filled with concentrated cleaning agent and fill with 4.5 litres of tap water -- Produces 5 litres of ready-to-use cleaning agent. Genuine Original Replacement Spare Part