Write an article based on this "Scrape off the excess crusted matter using a brush. Mix 1/2 teaspoon liquid detergent with enzymes, 1 tablespoon ammonia and 1 quart cold water in a basin. Soak the fabric for at least 30 minutes. Wash the fabric as you normally would."

Article:
Do not use warm water. For older insect stains you have to soak it longer. If the stain is still visible, repeat the soaking process.