Get your cleaning solution. It's best to use a gentle, non-detergent soap.
Mix the soap with water in a small bowl or bucket using three or four drops of soap per quart of water, or enough to make the solution bubble.
Use a damp cloth or soft-bristled brush to apply the cleaning solution to your furniture. Apply the bubbles rather than the liquid. Rub the brush lightly up and down the dirty area.
Rinse off the soap with a sponge or rag dampened with water.
Use a dry cloth to dry the leather or vinyl and wipe off any excess water. Don't allow the water to sit.
Use a vinyl/leather cleaner. Vinyl and leather are absorbent and may hold stubborn stains that are difficult to get out with just soap and water. For these, use a leather/vinyl cleaner sold at furniture and home improvement stores. Follow the mixing and application directions on the bottle. Apply it with a cloth or paper towels.