Metal grill brushes and scrapers leave behind dangerous broken bristles. The Grill Dog cleans your grill efficiently and with no risk of metal shards or wires getting stuck in your food! First Use Instructions: 1. Preheat Grill - to start the grooving process, ensure your grill is hot (high heat allows the grooves to form quickly). 2. Slide Back And Forth On Grill - Using slow firm pressure, pass the Grill Hog front to back on the hot grates. 3. Repeat - align the previously formed grooves to the grates ensuring that only ONE good set of grooves forms. Once grooves have formed, high heat is no longer necessary. No maintenance. No metal wires. Cedar grill cleaner.