I would use a pressure cleaner like a K’Archer. They are an excellent cleaner, great for getting into all those crooks, crannies and crevices

There are two ways. One us the Deck clean solution from a hardware store, and the other is a pressure washer used for a car. My painter used the latter method prior to repainting the deck.

Buy one of the deck cleaning solutions from a hardware store they work amazing , all you do is scrub the deck down with it diluted and wash it off,then give it a good coat of deck oil and if should be easier to clean

I also would like the answer to this.all I do is sweep then hose down, but 10 minutes later footprints are everywhere even when Its dried.