For cotton and polyester: Stretch fabric over a bowl. Mix one cup of household ammonia with one gallon warm water and pour over stain. If stain remains, let sit for 30 minutes – four hours. Rinse in warm running water. Machine wash in warm water. Air dry and repeat steps if necessary. This stain may be permanent.
For washable silk and wool: Take garment to a dry cleaner; this stain may be permanent.