The rust-resistant properties of stainless steel, combined with its shimmering appearance, made it a popular kitchen item in the mid-20th century. Kitchen sinks, pot holders, door handles and even furniture were often made from stainless steel. Trash cans are also an easy place to hide dirt and "germs" because they have to accept all kinds of waste and are surrounded by bacteria and mold every day, thus polluting the indoor environment. Some of the garbage cans on the market due to the unclear source of plastic materials, may be with some radioactive substances or harmful volatile substances, there are certain health risks, but stainless steel and bamboo not only less such problems, but also easy to clean. In addition, smaller trash cans can prompt people to pour garbage diligently, shortening the time of bacterial growth.