Tree sap leaves behind a sticky residue that can be hard to remove from clothing. Instead of throwing away clothes stained with tree sap, you can remove the sap with a few common household items. Before you stick your clothes in the washer, you will need to treat the stains. Laundering clothes stained with tree sap will leave behind permanent dark marks that you often cannot remove.
Place your clothing on a flat surface. Lay an old towel directly underneath the tree sap stain.
Soak a cotton ball with rubbing alcohol. Rub the tree sap with the alcohol, saturating the area completely. If the stain remains, try removing it with laundry detergent.
Combine equal amounts of powdered laundry detergent and water. This will form a paste that you will rub into the stained area. Allow the paste to sit for 30 minutes.
Launder the clothing according to the care label. Avoid placing any other clothes in the laundry machine.
Hang the clothing to dry. This will prevent any traces of the tree sap that you did not notice from becoming permanent.