Sustainable Products, Projects and Green Design Vitality Kitchen Waste Disposal Box by Chaozhi Lin,Junjie Zhou,YongLiu,Can Wang They used a natural method of compost. They found that earthworms, as a common creature on the earth, are not only friends of crops, but also friends of humans. Life practice shows that vermicomposting is a kind of green composting method: earthworms convert food residues into agricultural fertilizer through their esophagus. This method of recycling reduces the additional cost of garbage collection, storage and transportation, and also makes food waste disposal easier.