Sprinkle coarse salt onto the grease and rub it in. Coarse salt acts as an abrasive, which can be useful for stain removal. Sprinkle the salt onto your jeans and use a paper towel to rub the salt over the grease stains.Try using cornstarch or baking soda if you don’t have coarse salt. These may also act as abrasives that can soak up some of the grease.