To use these Hot Wheels Monster Trucks, simply place them on a flat surface and give them a gentle push. They're great for both indoor and outdoor play. When playing, make sure to keep them away from small children who might put parts in their mouths as there could be a choking hazard. For maintenance, wipe the trucks with a dry cloth to keep them clean. Avoid exposing them to water or rough handling to prevent damage to the die - cast body and wheels.