1. Dip the stains in warm water (40 ℃) with benzene or cotton group dipped in benzene scrub, and then wash with detergent, water (warm water) rinse.
2. Soak the stains with cold water, gently wipe with carbon tetrachloride or acetone, then wash with detergent, warm water rinse.
3. When the stain is deep, you can first wipe with gasoline, and then use 95% alcohol rubbing brush, if the remaining remains, but also need bleach cleaning. Finally, rub gently with toothpaste and soap, then rinse with water.
But it is strictly forbidden to soak with boiling water.
4. If dyed on paper, it is most appropriate to treat it with a correction solution or a correction strap.