Refillable beverage containers are generally considered environmentally preferable to one-way containers – containers designed for a single use. Yet, for decades, their use has dwindled in the United States, to the point where refillables make up 5 to 7% of beer and soft drink containers. At the same time, American drink producers have maintained or re- introduced refillable containers in Europe and elsewhere. Many Canadian provinces promote refillables too. All beer and soft drinks produced in Prince Edward Island, for instance, are in refillable glass bottles.