How Do You Get Yellow Stains Out From White Sheets And Pillowcases?

If the pillow case is white, I would take a tooth brush and dip it some bleach and the wash with the white clothes. Also I have a few other idea's.

Boil yellowed cotton or linen fabrics in a mixture of water, 1 tablespoon salt, and 1/4 cup baking soda. Soak for 1 hour.

Yellowed linens can be brighten by adding 4 tablespoons baking soda to the wash water.

Also here is a Pretreating Stain Remover.

1/2 cup ammonia
1/2 cup white vinegar
1/4 cup baking soda
2 tablespoons liquid soap
2 quarts water

Mix all ingredients in a spray bottle. Spray the liquid onto the stain, and let it sit for a few minutes. Launder as usual.

A Variation: Use soap flakes and baking soda when washing stained natural fabrics. Add 1 tablespoon of vinegar to the rinse to keep colors bright.

I have books that have instructions on how to clean stuff around the house they are all titled
OVER 100 HELPFUL HOUSEHOLD HINTS using white vinegar, salt and Armor & Hammer Baking Soda. Hope this helps
:O)

If you haven't use a chlorine bleach yet, soak items in Oxy Clean over night. Mix 2 (granuals)scoops with hot water, fill washer or wash tub. Pour into wash load and let soak. You may have to do this 2 or 3 times if the stain has been set. Also, I have found that soaking in ammonia and warm water for a day or two, some times does the trick for some stains, especially grease stains.

You can use stain devil or glow white or if your on a low budget use hot water and bleach but wash the sheets on a hot wash twice to make sure you washed all the bleach out.