<human>:  What is the best way to remove a stain from a shirt?
<bot>: The best way to remove a stain from a shirt is to pre-treat the stain with a liquid detergent or laundry stain remover, and then wash the shirt in warm water with regular laundry detergent. Once the shirt is washed, hang it up to dry in order to avoid setting the stain in the fabric.