<human>:  What is the best way to clean a stained shirt?
<bot>: The best way to clean a stained shirt is to treat the stain with a pre-treatment product specifically designed for the type of stain you are dealing with. Then, launder the shirt using the right amount of detergent, the correct water temperature and the right cycle. Finally, check the stain to see if it has been removed before drying the shirt.