In one sentence, describe what the following article is about:

Sometimes, you don't notice oil stains until after you have already washed and dried the garment. Unfortunately, the heat of the dryer would have set the stain into the fabric. Luckily, it is still possible to remove the stain. Here is a list of what you will need to do this:  Cardboard (recommended) WD-40 Baking soda Dish soap Old toothbrush Small bowl and Q-tips (for small stains) Washing machine Do not rinse the dish soap off; it will come off in the washer. If the stain is still there, let the garment air-dry, and try the method again. You can also take the item to a dry cleaner. Only when the stain is gone is it safe to put it into the dryer. This is because the heat of the dryer can set the stain.

Summary:
Gather your supplies. Wash the garment in the washing machine according to the tag. Make sure that the stain is gone before using the dryer.