<human>:  What is the best way to remove a grass stain on clothes?
<bot>: The best way to remove a grass stain on clothes is to first blend one part dishwashing liquid with four parts water and rub it gently into the stained area. Then, rinse in cold water and repeat if necessary. If the stain persists, use a 50/50 mix of rubbing alcohol and water and rub it into the stained area. Finally, rinse with cold water and launder as usual.