Ensure you always rinse the trays whenever you remove them to help in keeping them wet and to prevent saliva and plaque from drying on the trays. Resist brushing your clear aligners using toothpaste as this will cause discoloration. Instead, use clear anti-bacterial soap and rinse them using lukewarm water. Removing food particles and any leftovers will help keep your clear aligners clean and prevent the pile-up of odor-causing particles.