How do you remove set-in stains?

To remove a set-in stain, pour vinegar over the stain, and rub the stain with a vinegar and baking soda paste. You need vinegar, baking soda, a bowl, a measuring spoon and a rag.

1. Make a vinegar and baking soda paste

   Pour a small amount of baking soda into a bowl. Measure a few tablespoons of vinegar, and pour them over the baking soda. Stir the mixture with the measuring spoon, and turn the mixture into a paste.

2. Pour vinegar over the stain

   Pour vinegar over the stain until the stain is soaked.

3. Rub the paste into the stain

   Dab a bit of the paste on a clean rag, and rub the paste into the affected area until the stain comes out.