If you're looking for a solution to remove oil stains from clothes, understanding the role of pH levels is crucial. Acidic substances like baking soda and white vinegar are often recommended for pre-treating oil stains, but it's essential to know why they work. When an acid comes into contact with an alkaline oil stain, such as motor oil or grease, the acid helps break down the oil's molecules, allowing them to be more easily absorbed by the fabric or washed away. This is because oils are generally alkaline in nature, while acids like baking soda and vinegar have a pH level that disrupts this balance, making it easier to remove the stain. By using an acidic substance as a pre-treater before washing, you can increase the chances of successfully removing the oil stain from your clothes.