Your splint should be cleaned frequently, especially after it has been worn and will be stored for a period of time. The splint will collect debris, stains and odours if not cleaned properly. It can be cleaned with your toothbrush, soap and water. Toothpaste is too abrasive for the plastic and should not be used for cleaning a splint. In addition to cleaning with a brush, soaking in a diluted bleach solution once a week or soaking in an effervescent solution several times a week will minimize staining and odours of the splint.