2, leftovers, such as leftover fish bones ah, shrimp skin ah and so on.
3, fruits and vegetables, such as fruit peel, fruit pulp, vegetable skin and so on.
4, expired food, such as sugar, cakes, cakes, pet feed and so on.
5, flowers and plants, such as flowers and plants raised at home.
6, food waste, such as do not want the animal offal, egg skin, seasonings, sauces, vegetables, etc.