Compost Magic by Sun-Mar is an easy way to naturally speed up your composting process. This 100% natural bulking material is made from dried and compresses coconut fiber. To use Compost Magic, simply place one into a container and add one gallon of water. The brick will then expand to a volume of two gallons. Compost Magic speeds up your composting process because it keeps the compost moist, maintains the compost's porosity, by providing an oxygen rich environment for aerobic microbes. In addition, Compost Magic provides a a carbon source if there is too much nitrogen rich (green) material. Finally, by rotating your compost's drum, Compost Magic is able to break up waste materials by increasing the surface area for aerobic bacteria. Six Compost Magic bricks come in a box.