As California collects and recycles organic materials, local governments will be required to use the products made from this recycled organic material, such as renewable energy, compost, and mulch. For example, it will be used to curate healthy soil! Compost is a key to healthy soil, and healthy soil is critical to reducing carbon in the air. Organics are readily recyclable into soil amendments like compost, mulch, and liquid fertilizers, as well as biofuel, a renewable natural gas.