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The bacteria are ubiquitous in life,we always prevent the carelessly, the bacteria threaten my health. Cans are the most commonly used tool in our life, and we are always open cans began drinking water, the bacteria will with drinksinto the body did not prevent bacteria have long breeding at the mouth of the cans of the drink, the bacterium can with drinks into our bodies. In fact, we only need to install a straw in cans, when open the cans for a moment, straw will play out, not embarrassed to straw, also will not have to worry about orget to use straw, easily solve small problems in life.