A needle disposal box is used for disposing of one-time-use syringes and other products, but the box itself is not always disposable. In an effort to reduce the use of one-time-use plastics, some types of needle disposal boxes are thoroughly disinfected by medical facilities that specialize in discarding medical equipment. Once the container has been adequately sterilized, it is then returned to the original source for a second use. To ensure your safety, do not attempt to disinfect the container yourself. It should always be sent to a proper medical facility.