Lawn Furniture Best Way To Clean The Cushions Of Lawn Furniture Left In The Outdoors Of Oregon... Perhaps A Power Sprayer?

Best way to clean the cushions of lawn furniture left in the outdoors of Oregon... perhaps a power sprayer? - lawn furniture

You have very good cushion seats that remain in the rain, rain, wind in our region, Oregon out there ... which are colored, and although they do not smell, they are looking for seniors, but not. I know it will be a big effort to replace them. Suggestions? Thanks