How can I effectively clean a rag covered in dirt?

To effectively clean a rag covered in dirt, you can start by rinsing it in warm water to remove loose dirt. Then, soak the rag in a mixture of water and laundry detergent for about 30 minutes. After soaking, scrub the rag gently with a brush or your hands to loosen the remaining dirt. Finally, rinse the rag thoroughly with clean water and let it air dry.