Plastic bottles are recyclable. Before garbage sorting, plastic bottles should be divided into three categories: bottle body, bottle cap and trademark, and put into trash cans respectively. Usually, plastic bottles are recyclable, and bottle caps and trademarks are dry garbage.

Recyclable things include paper, cardboard, glass, plastic, metal, plastic packaging and so on. These things are recyclable and can be reused.

Bottle caps and trademarks have no recycling value. These things can't rot, so they can't be put in dry garbage. They can only be put in dry garbage containers.

Garbage classification can reduce the quantity and equipment of garbage treatment, reduce the treatment cost, reduce the consumption of land resources, turn waste into treasure, and have social, economic and ecological benefits.

Garbage sorting can save resources and make the city more beautiful. Garbage sorting is the best scheme and way to deal with garbage. Because garbage is not classified, and modern garbage contains chemical substances, some of which penetrate into groundwater or enter the environment after decomposition, which will lead to an increase in human morbidity. If the garbage is disposed by landfill or garbage stacking, even if the garbage is buried in the living place, it is difficult to eliminate the influence of harmful substances on people. These harmful substances will eventually enter the whole ecosystem with the earth's circulation, polluting water and land.