Never cook on dirty cooking grates. Clean them using the Saber Grills A00YY1615 19-Inch Cool-Touch Nylon Bristle Grill Brush Replacement Head. The nylon grill brush should only be used on cool grill grates before or after grilling to keep your grates clean. The abrasive nylon bristles last 5 times longer than standard wire bristles and are better for your health. Clean before or after cooking, making sure the grill is cool to the touch. Set of one(1) per order.