Tosa Binchotan Charcoal is a natural way of purifying water. Binchotan is known as high-grade charcoal and is activated through an extremely high burning temperature and a rapid cooling process. Binchotan absorbs impurities from drinking water while releasing natural minerals into it. Binchotan has an alkaline effect - it softens and improves the overall taste of water. Each stick can be used for about three months. After three months, it can easily be recycled by breaking it into small pieces and placing them into your plant soil, creating micro water and air cavities in the soil. Made in the Tosa region in Japan. First use: rinse with water and boil for 10 minutes and let dry. 3 binchotan charcoal sticks are included in one package.