DO NOT RUB IT. It is important that you understand that despite the fact that our garments have an anti-stain treatment, if you rub that stain, you will get it to penetrate the fabric.
So in case you accidentally get stained, use a little water to slide the stain off the fabric and remove it immediately with a clean cloth or paper.
There is some case, such as oil or oil-based stains, in which you may have to apply an anti-stain liquid before washing the garment.