You can safely use these over your barbeques or grills. If you want to grill goods over barbecue or very high-heat, please soak these sticks in water for 30 minutes before loading the food on them to prevent them from burning. It is made with finest grade of bamboo material. The material is made hygienically to avoid any health issues to customers. These are just right for nice middle size kebabs, satay or lots of marshmallows etc. These plates are widely used in functions, marriage parties, restaurants and many other places.