Vinegar: Remove stubborn stains using vinegar's bleaching properties. Mix ½ cup of vinegar with water, soak the uniform for an hour, then scrub with a brush to eliminate stains.
Baking Powder: Baking powder is effective for stain removal. Make a paste with baking powder and water, apply it to the stains, and scrub. It’s advisable to wash new uniforms before giving them to children.