This article aims to review the currently available disposal method of clear aligners and create awareness on the environmental hazards they can possess. Thermoplastic aligners have emerged as the most popular and adaptable orthodontic treatment option in this constantly changing environment with an increase in demand for aesthetics. However, as the use of thermoplastic aligners has increased, there has been a steady growth of non-biodegradable plastic trash with each passing year, which in turn is contributing to global warming and is also unpleasant to the environment. The material properties of aligners and the currently followed disposal method have been reviewed and discussed. It is the responsibility of orthodontists and dentists to raise the issue and endeavor to reduce plastic waste in order to prevent environmental problems. This is significant because existing popularity for clear aligner treatment in turn increases the plastic waste turnover and awareness on correct disposal methods is the need of the hour.