Outdoor furniture cleaning solution: to 1 gallon of hot water, add: 1 cup Borax, ½ cup hydrogen peroxide, ¼ cup liquid dish soap (whatever you have on hand, but I like Dawn). Stir to dissolve Borax, then apply to furniture & cushions with a brush or scrubby sponge (check fabric for colorfastness, but peroxide would usually have to stand on fabric for hours to have a bleaching effect, if any). Rinse & repeat, if necessary.
DIY outdoor furniture cushion cleaning solution: in a spray bottle, fill 3/4 full, then add 1 tsp. of dishwashing liquid and 1 tsp. of borax. Fill spray bottle to the top, then shake to combine. For full how-to steps...click in!