The contact lenses case plays an important role in wearing the contacts, because you know the contact lenses case is the home of the contacts. When you used them for some time, you should wash and clean them. As usual, you should wash your contacts case with tap water, pls note not boiled water. Then you can let the contact lens case dry in the air. At last, you should wash the case with the solutions, and then you can use it to store the contact lenses. Although you can wash and clean the case, I strongly suggest you change and replace the case every three months, which is very essential point which we should keep in mind.