Now, before you throw it in the washing machine, apply a liquid laundry detergent directly to the spot. Rub it in like you’re telling it a secret. This is the second punch. The combo of dish soap and laundry detergent is a one-two knockout.
Let it sit for another five minutes. Yes, more waiting. But trust me, it’s worth it. Think of it as marinating your jeans in cleanliness. Then, toss the garment into the hottest wash cycle that’s safe for the fabric.
Remove Black Grease Stain From Clothes at Kathaleen Velasquez blog
A personal plea:
Do not put it in the dryer yet. I repeat: do not put it in the dryer. Heat from the dryer will bake any remaining grease into the fibers forever. Check the stain after the wash. Is it gone? Great! Dry away. Is it still there? Go back to Step Two. Seriously, repeat the dish soap treatment and wash again.
If you dry it while the stain is still there, you’ll have to call in an exorcist or a dry cleaner. And that’s expensive and awkward. “Hi, I have a possessed shirt. Yes, I hugged a lawnmower. Why do you ask?”