Mix the powdered oxygen bleach stain remover with warm water in a bowl or other container. Read the instructions on the brand of cleaner you are using to see how much cleaner to use. Most recommend approximately 1 ounce per quart of water.
Dab some of the liquid mixture onto a clean, dry rag.
Spot check your upholstery by dabbing the mixture onto an area that isn't very visible (such as on the underside of the piece of furniture). Wait about 10 minutes to make sure there is no discoloration. If the color hasn't been harmed, proceed to the next step.
Sponge the liquid cleaning mixture onto the stain until the area is saturated. Allow the mixture to stay on the area about 15 minutes.
Blot the area with clean, dry rags or towels until the stain is completely gone.