Most coffee stains can be removed with a gentle cleaner. For example, dishwashing liquid or even gel soap will do.
Universal product - dishwashing gel
The most important thing is to choose a product that copes well with it.
Apply undiluted product to an old stain or drip and leave for a couple of minutes, after which the softened residues are removed with a sponge, brush or rag.
The trick for wall stains is to apply the product very carefully using a soft-bristled brush.
All you need is a stain remover and liquid laundry detergent.
Before washing, apply the stain remover to the stain and let it sit for the time indicated on the package.
Then rinse the item and rub the stain with liquid laundry detergent.
Finally, wash the item as usual, following the instructions on the label.
To do this, in one container, mix one tablespoon of dishwashing detergent, one tablespoon of vinegar, and two glasses of warm water.
Mix all ingredients thoroughly and apply to the stain on the carpet.
After a few minutes, scrub the carpet with a brush or towel.
You will be surprised, but the stain will disappear.
Old coffee stains can be cleaned using a mixture of hydrogen peroxide and ammonia.
The largest and thickest stains can be removed with a hot solution of baking soda and salt; you need to dilute one tablespoon of salt and soda in three liters of cold water, boil this mixture and apply it to the stain.