When an oil stain has a color component (like greasy pizza sauce, pesto or gravy), after treating with the dish detergent, but before machine washing, treat the stain again with liquid Clorox 2 for Colors. It’s okay to do this right after rinsing away the dish detergent. Apply a little Clorox 2, rub it into the stain and wait 10 minutes, then machine wash.