Human: I'm interested in learning more about the best ways to take care of my lawn. What are the best fertilizers to use? Assistant: 
The best fertilizer for your lawn depends on its specific needs and the type of grass you have. For example, a cool-season grass may require a different fertilizer than a warm-season grass. Additionally, some types of fertilizers can be harmful if used incorrectly or overused. It's important to research what kind of fertilizer is best suited for your particular lawn before making any purchase.