The Role of Retainers in Maintaining Your Orthodontic Results If you take care of it, your retainer will last (and stay germ-free) for a long time. Clean removable retainer daily with toothbrush and soap. Don’t use hot water it can warp the plastic. Learn More- https://medium.com/@georgebook854/the-role-of-retainers-in-maintaining-your-orthodontic-results-0586c2cac7a9