Clean drip trays. Most grill fires can be prevented with a little bit of maintenance. If your grill has a drip pan or tray, get in the habit of regularly cleaning out the fat, grease, and oil that collects there. And brush off your grill grates each time you’re finished cooking. It’s a messy job, but it will prevent fires by removing the fuel that gets burned while helping to prevent your grill from rusting.