Human: What is the best way to remove the oil stains on a driveway? Assistant: 
The best way to remove an oil stain from a driveway is to use a concrete cleaner or degreaser. Make sure to follow the instructions carefully and test it on a small area first. If necessary, you can also use a mild detergent and warm water to help loosen up the oil. Finally, rinse with clean water until the area is free of any residue.