Mix 2 tsp. of dish soap into 1 cup of warm water.
Dip a sponge into the soapy water. Wipe the sponge over the grease stain until the stain is saturated.
Allow the soap mix to sit on the stains for at least 15 minutes. Apply more soapy water as needed to keep the stains damp.
Sprinkle baking soda over the dampened grease spots and scrub the area with a damp sponge.
Dip a clean cloth in white vinegar. Rinse the area with that cloth to eliminate leftover soap and grease.