A detergent-free powder cleaner which cleans and revives wooden decking. Decking Cleaner is ideal for cleaning dirt, grime, bird droppings & infestations from various types of wooden decking, including cedar, redwood & composite decking. Mix 1-2 scoops with a litre of hot water and pour or brush on to your decking. Scrub with a stiff brush and allow a few minutes to act. Rinse off or use a power hose.