To use these Hot Wheels Monster Trucks, simply grab the truck and roll it on a flat surface. You can make it crash and smash into things to recreate the exciting Monster Truck action. Keep in mind that these trucks are for kids 3 years old and up, so make sure younger children are supervised when playing with them. To maintain the trucks, you can use a dry cloth to wipe off any dust or dirt. Don't expose them to water or extreme heat as this could damage the die - cast material. Also, since colors and decorations may vary, enjoy the unique look of each truck you get. And remember, they are sold separately, so you can collect them all over time.