Remove as much mustard as possible with a dull knife or spoon.
Stain Removal Step 2.
Rinse the stain from the back thoroughly with cold water.
Stain Removal Step 3.
Rub liquid detergent on the stain and allow it to stand for at least 5 minutes.
Stain Removal Step 4.
Rinse the stained area well and repeat until no more stain can be removed.
Stain Removal Step 5.
Add a stain remover stick, gel, or spray to the stained area.
Stain Removal Step 6.
Wash normally with liquid detergent.
Stain Removal Step 7.
Repeat steps 3-6 until stain no longer remains.
