Some stains are more difficult to remove than others and it depends on the stain and the type of material that the stain is on.
Some materials are more difficult to remove stains from, such as silk.
To remove stains from silk, add cup of mild detergent and two teaspoons of white vinegar to two quarts of cold water. Do not soak the material in this solution. Rinse well and then roll the garment in a towel and iron while it is still damp. To prevent yellowing of linen and wool, especially of garments and blankets, add cup of white vinegar to the rinse water. If you come across a stain while you're doing your laundry and you don't know how to remove the stain ,then these are some good tips on how to remove it with what you have available in your house.