Most medical supply stores and pharmacies carry sharps containers and you can also find them online. Another way to purchase sharps containers is through a mail back service. A mail back service allows you to purchase sterile sharps containers and when the container is full, simply mail it back to them. This process can be extremely useful for those who live in communities without a disposal site. To learn more about mail back services, call one of the providers below that carry a variety of container sizes and prepaid mailing cartons.