Accidents occur when grease spills onto fabric, causing a stain. Since grease stains are best removed when they are fresh, you'll have to spend more time removing older stains. Old grease stains have already set into the fabric, requiring different cleaning techniques than fresh grease stains. Lubricant spray should be applied to the old grease stains, followed by a paste of liquid dish detergent and baking soda. All of the solutions should be tested on a hidden area of the fabric, to protect against staining, fading, or damage.
Spray the grease stain with lubricant spray. Allow the lubricant to absorb into the stain for five minutes.
Mix liquid dish detergent with baking soda in a cup to form a paste. The paste should have the consistency of toothpaste.
Spread the paste onto the stain with a paper towel. Lightly scrub the fabric with a toothbrush to work the paste into the stain. Allow the paste to set on the stain for 10 minutes.
Dampen a washcloth with water, and then wipe the paste off the fabric with the washcloth.
Wash the fabric in a washing machine with cold water according to instructions on the tag. Allow the fabric to air-dry.