There are several methods to get rid of bacon grease stains. The sooner that you can treat the stain the better luck you will have at permanently removing it. That’s not to say that older stains cannot be removed fully, but it just might take a bit more work to get rid of them.
Start by blotting at the stain with a clean cloth, or with paper towels. Again, it’s important that you don’t rub at the stain. Simply blot, and lift.
Combine baking soda with a mild dish detergent. Mix in a small bowl until the cleaning paste resembles toothpaste.
Apply your cleaning paste to the material, with your fingertips or with a clean cloth. Allow the cleaning solution to sit for no more than a few minutes. Taking a soft-bristled brush, carefully scrub the cleaning paste into the stain to work it through completely. Allow to sit for 10 minutes.
Rinse the fabric clean using luke-warm water, and examine your results. If evidence of the stain still remains, you can repeat the process. You can also combine your efforts with a commercial stain remover gel.
After allowing the powder to sit for 10 minutes, rinse it well with a mild dish soap. Rub the dish soap into the fabric to really work it into the fibers. Rinse clean.
Once the stain is no longer visible on the fabric you can now wash it in your washing machine.