tea residue belongs to wet garbage in garbage classification. After being brewed, tea leaves will be mildewed and rotted after being placed in the air for a long time, and it contains a lot of microorganisms such as bacteria and fungi, so it belongs to wet garbage.

Wet garbage refers to the garbage that is easily corroded, mainly including perishable biomass domestic wastes such as food waste, leftovers, expired food, melon skin and stone, flowers and green plants, and Chinese medicine residue. Wet garbage is generally kitchen waste, but hard kitchen waste such as big bones, hard shells, coconut shells, durian shells, walnut shells, corn coats, sugarcane skins, durian kernels and jackfruit kernels belongs to dry garbage.

In the garbage classification in China, the garbage in daily life is divided into four categories, namely harmful waste, recyclable garbage, wet garbage and dry garbage.

harmful waste is a substance that directly or potentially harms human health or the natural environment. Recyclable garbage refers to items that are suitable for recycling and recycling. Wet garbage, perishable kitchen waste. The rest is dry garbage.

At present, in cities where garbage sorting has been implemented in China, there are four garbage bins with different colors for garbage sorting, among which the green trash bin is used to hold kitchen waste, the yellow trash bin is used to hold other garbage, the red trash bin is used to hold hazardous waste, and the blue trash bin is used to hold recyclable garbage.