Shake the can well and spray from an 80cm height over the area that needs treating.
Always spray the carpet cleaner downwards, never upwards.
Work the foam into the carpet using a clean, damp colourfast sponge-mop or cloth.
Leave for approximately 2 hours (or until dry) and then vacuum. If you don't have Vanish to hand when the stain occurs don't worry as Vanish can treat mud and soil stains even after they have dried in.