1. Use a bucket deep enough to add laundry detergent or washing powder and submerge the entire garment underwater. An ample enough soaking space with enough water added will soak the clothes better. But avoid spilling water from clothes. If you plan to place the washing machine to wash your clothes after soaking, you can just submerge the clothes in the washing machine. Add detergent to the washing machine and soak it with water for 20-30 minutes.
2. Pour out the water in the bucket or drain the washing machine. Then, add detergent or stain remover to the stain and rub gently. Then place the clothes in the washing machine to clean or place them inside the bucket to ensure that the stain can be cleaned off, if soaking does not remove the stain, then you can consider soaking again.