How To Clean My Plastic Retainer. Dissolve a tablespoon of baking soda in a cup of water. You can scrub them gently with baking soda and a soft bristled toothbrush.
Here are a few best practices when it comes to cleaning your clear plastic retainer: If the retainer is covered in a film or in mineral deposits, a soft toothbrush can be used to scrub the retainer clean. There are several products available and you can find them by googling “retainer cleaner.”
Place your retainer into the natural cleaning solution and let it soak for 20 minutes.
The solution will be 1/2 vinegar and 1/2 water. Scrub with dish soap for 20 seconds, using a sponge or scrubber appropriate for the material of your retainer case. Rinse with water and apply friction with your fingers 2. Give it time for dirt and debris to properly clean.