Not all stains that get on clothes can be removed using regular washing powder.
For example, this method will definitely not work on an oil stain.
Instead, try removing dirt using one of the food products, namely, the most common starch.
You need to proceed as follows.
1. Place a white cloth under the inside of the item where the stain was found.
2. Sprinkle starch on the stain itself, which should first be heated in a dry and clean frying pan.
3. All that remains is to press the starch with a press, any heavy object will do, and leave it like that for about 25 minutes. After this, the weight can be removed, and the starch can be removed by shaking vigorously.
We won't hide it: sometimes it happens that this method doesn't work. In this case, you need to use ammonia, in the solution of which you need to wet the dirty area of the fabric, after which the item should be rinsed and washed in the washing machine.