1. Absorb it: First lift off or soak up as much of the staining substance as possible. Use absorbents such as talcum powder or paper towels.
2. Dissolve it: Residue that can't be absorbed needs to be dissolved. Different substances have differing ways they dissolve.
3. Use a detergent: Greasy or fatty stains, such as gravy, will not dissolve in water.
4. Use a chemical reaction: If none of the above work you need a chemical reaction. These are chemicals such as bleach and enzymes.